成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:150%">5、<span style="font-size:12.0pt; line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-font-kerning:0pt">二次型</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"><span style="position: relative;top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1337" type="#_x0000_t75" style='width:243pt;height:21pt' o:ole=""> <v:imagedata src="xxds05.files/image411.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="324" height="28" v:shapes="_x0000_i1337" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds05.files/image412.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1337" DrawAspect="Content" ObjectID="_1604819148"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">标准型为（</span><span style="font-size:12.0pt;line-height: 150%"> </span><span style="font-size:12.0pt;line-height:150%;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">4、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-font-kerning: 0pt">若存在一可逆阵</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative;top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1303" type="#_x0000_t75" style='width:13.2pt;height:13.8pt' o:ole=""> <v:imagedata src="xxds04.files/image387.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="18" height="18" v:shapes="_x0000_i1303" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image388.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1303" DrawAspect="Content" ObjectID="_1604819084"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">使得</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1304" type="#_x0000_t75" style='width:40.2pt;height:16.8pt' o:ole=""> <v:imagedata src="xxds04.files/image389.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="54" height="22" v:shapes="_x0000_i1304" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image390.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1304" DrawAspect="Content" ObjectID="_1604819085"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">为对角阵，其中</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:28.0pt;mso-text-raise:-28.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1305" type="#_x0000_t75" style='width:100.2pt;height:63pt' o:ole=""> <v:imagedata src="xxds04.files/image391.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="134" height="84" v:shapes="_x0000_i1305" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image392.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1305" DrawAspect="Content" ObjectID="_1604819086"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，则</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1306" type="#_x0000_t75" style='width:13.2pt;height:13.8pt' o:ole=""> <v:imagedata src="xxds04.files/image387.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="18" height="18" v:shapes="_x0000_i1306" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image388.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1306" DrawAspect="Content" ObjectID="_1604819087"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">为（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0pt;mso-line-height-rule:exactly">16、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_89" o:spid="_x0000_i1114" type="#_x0000_t75" style='width:267pt;height:21.6pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds02.files/image096.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="356" height="29" v:shapes="图片_x0020_89" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image096.png"> <!--[endif]--></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:150%">32、<span style="font-size:12.0pt; line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-font-kerning:0pt">设</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;mso-font-kerning:0pt">4</span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-font-kerning: 0pt">个</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%; mso-font-kerning:0pt">3</span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-font-kerning:0pt">维列向量</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1127" type="#_x0000_t75" style='width:70.8pt;height:19.2pt' o:ole=""> <v:imagedata src="xxds03.files/image145.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="94" height="26" v:shapes="_x0000_i1127" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image146.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1127" DrawAspect="Content" ObjectID="_1604818852"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">组成的矩阵经初等行变换后变为</span><span lang="EN-US" style="font-size: 12.0pt;line-height:150%"><span style="position:relative;top:28.0pt; mso-text-raise:-28.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1128" type="#_x0000_t75" style='width:199.2pt;height:63pt' o:ole=""> <v:imagedata src="xxds03.files/image147.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="266" height="84" v:shapes="_x0000_i1128" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image148.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1128" DrawAspect="Content" ObjectID="_1604818853"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，则</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:6.0pt;mso-text-raise: -6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1129" type="#_x0000_t75" style='width:16.8pt;height:19.2pt' o:ole=""> <v:imagedata src="xxds03.files/image149.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="22" height="26" v:shapes="_x0000_i1129" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image150.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1129" DrawAspect="Content" ObjectID="_1604818854"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">可表示为</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:6.0pt;mso-text-raise: -6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1130" type="#_x0000_t75" style='width:28.2pt;height:19.2pt' o:ole=""> <v:imagedata src="xxds03.files/image151.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="38" height="26" v:shapes="_x0000_i1130" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image152.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1130" DrawAspect="Content" ObjectID="_1604818855"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;line-height:150%; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">（</span><span style="font-size:12.0pt;line-height:150%"> </span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">15、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:6.0pt;mso-text-raise: -6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1152" type="#_x0000_t75" style='width:51.6pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image207.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="69" height="22" v:shapes="_x0000_i1152" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image208.png"> <!--[endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">是来自正态总体</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1153" type="#_x0000_t75" style='width:43.2pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image209.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="58" height="22" v:shapes="_x0000_i1153" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image210.png"> <!--[endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的样本</span><span lang="EN-US" style="font-size:12.0pt">,</span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">已知统计量</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:6.0pt;mso-text-raise: -6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1154" type="#_x0000_t75" style='width:88.2pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image211.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="118" height="22" v:shapes="_x0000_i1154" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image212.png"> <!--[endif]--></span><span lang="EN-US" style="font-size:12.0pt"><span style="mso-spacerun:yes"> </span></span><span style="font-size:12.0pt; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">是方差</span><span lang="EN-US" style="font-size:12.0pt; position:relative;top:3.0pt;mso-text-raise:-3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1155" type="#_x0000_t75" style='width:13.2pt;height:13.2pt'> <v:imagedata src="xxdsb11.files/image213.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="18" height="18" v:shapes="_x0000_i1155" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image214.png"> <!--[endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的无偏估计量</span><span lang="EN-US" style="font-size:12.0pt">,</span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">则常数</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:3.0pt;mso-text-raise: -3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1156" type="#_x0000_t75" style='width:9pt;height:13.2pt'> <v:imagedata src="xxdsb11.files/image215.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="18" v:shapes="_x0000_i1156" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image216.png"> <!--[endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">等于（</span><span style="font-size: 12.0pt"> </span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">5、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设随机变量</span><span lang="EN-US" style="font-size:12.0pt">X</span><span style="font-size:12.0pt; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的概率密度函数为</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1112" type="#_x0000_t75" style='width:27pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb07.files/image138.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="36" height="21" v:shapes="_x0000_i1112" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image139.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1112" DrawAspect="Content" ObjectID="_1604819027"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，且</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:7.0pt;mso-text-raise:-7.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1113" type="#_x0000_t75" style='width:66pt;height:20.4pt' o:ole=""> <v:imagedata src="xxdsb07.files/image140.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="88" height="27" v:shapes="_x0000_i1113" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image141.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1113" DrawAspect="Content" ObjectID="_1604819028"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，则必有（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">22、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设</span><span lang="EN-US" style="font-size:12.0pt">A</span><span style="font-size:12.0pt; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，</span><span lang="EN-US" style="font-size:12.0pt">B</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">表任意二随机事件，则下面错误的是（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"><span style="color:white"> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">19、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">随机变量</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1042" type="#_x0000_t75" style='width:9.6pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image035.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="13" height="21" v:shapes="_x0000_i1042" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image036.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1042" DrawAspect="Content" ObjectID="_1604818997"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">的概率密度</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:16.0pt;mso-text-raise:-16.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1043" type="#_x0000_t75" style='width:99pt;height:37.8pt' o:ole=""> <v:imagedata src="xxdsb08.files/image037.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="132" height="50" v:shapes="_x0000_i1043" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image038.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1043" DrawAspect="Content" ObjectID="_1604818998"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">则常数</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:3.0pt;mso-text-raise:-3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1044" type="#_x0000_t75" style='width:21.6pt;height:14.4pt' o:ole=""> <v:imagedata src="xxdsb08.files/image039.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="29" height="19" v:shapes="_x0000_i1044" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image040.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1044" DrawAspect="Content" ObjectID="_1604818999"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:150%">36、<span style="font-size:12.0pt; line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">设</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative;top:7.0pt; mso-text-raise:-7.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1198" type="#_x0000_t75" style='width:71.4pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image264.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="95" height="22" v:shapes="_x0000_i1198" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image265.png"> <!--[endif]--></span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">与</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:7.0pt;mso-text-raise:-7.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1199" type="#_x0000_t75" style='width:58.2pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image266.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="78" height="22" v:shapes="_x0000_i1199" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image267.png"> <!--[endif]--></span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">都是来自于总体</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1200" type="#_x0000_t75" style='width:10.8pt;height:10.8pt'> <v:imagedata src="xxdsb11.files/image229.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="14" v:shapes="_x0000_i1200" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image154.png"> <!--[endif]--></span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">的两独立样本，</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1201" type="#_x0000_t75" style='width:10.8pt;height:15pt'> <v:imagedata src="xxdsb11.files/image244.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="20" v:shapes="_x0000_i1201" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image268.png"> <!--[endif]--></span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">，</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1202" type="#_x0000_t75" style='width:9pt;height:15pt'> <v:imagedata src="xxdsb11.files/image246.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="20" v:shapes="_x0000_i1202" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image247.png"> <!--[endif]--></span><span style="font-size:12.0pt;line-height:150%;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">与</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"> <o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"><span style="mso-tab-count:1"> </span><span style="mso-spacerun:yes"> </span><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1203" type="#_x0000_t75" style='width:34.8pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image269.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="46" height="22" v:shapes="_x0000_i1203" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image270.png"> <!--[endif]--></span></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">分别是两样本的均值和方差，</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:5.0pt;mso-text-raise: -5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1204" type="#_x0000_t75" style='width:108pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image271.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="144" height="22" v:shapes="_x0000_i1204" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image272.png"> <!--[endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">，则有（</span><span style="font-size: 12.0pt"> </span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">19、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">设</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1063" type="#_x0000_t75" style='width:26.4pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image069.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="35" height="21" v:shapes="_x0000_i1063" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image070.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1063" DrawAspect="Content" ObjectID="_1604819136"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">为随机变量，且</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1064" type="#_x0000_t75" style='width:167.4pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image071.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="223" height="21" v:shapes="_x0000_i1064" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image072.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1064" DrawAspect="Content" ObjectID="_1604819137"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">则</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1065" type="#_x0000_t75" style='width:63pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image073.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="84" height="21" v:shapes="_x0000_i1065" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image046.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1065" DrawAspect="Content" ObjectID="_1604819138"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">（</span><span style="font-size:12.0pt"> </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>