成考院校在线答案
- 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"">下列函数中可以作为某个二维随机变量的分布函数的是（</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"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">6、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">如果函数</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:15.0pt;mso-text-raise:-15.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1180" type="#_x0000_t75" style='width:102pt;height:36pt' o:ole=""> <v:imagedata src="xxdsb07.files/image259.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="136" height="48" v:shapes="_x0000_i1180" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image260.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1180" DrawAspect="Content" ObjectID="_1604819095"> </o:OLEObject> </xml><![endif]--></span><span style="font-size:12.0pt;font-family:宋体">是某连续型随机变量<span lang="EN-US"><span style="position:relative;top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1181" type="#_x0000_t75" style='width:14.4pt;height:12.6pt' o:ole=""> <v:imagedata src="xxdsb07.files/image261.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="19" height="17" v:shapes="_x0000_i1181" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image262.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1181" DrawAspect="Content" ObjectID="_1604819096"> </o:OLEObject> </xml><![endif]--></span>的概率密度</span><span lang="EN-US" style="font-size:12.0pt; font-family:Microsoft Yahei;mso-hansi-font-family:"Times New Roman"">,</span><span style="font-size:12.0pt;font-family:宋体">则区间</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_i1182" type="#_x0000_t75" style='width:27.6pt;height:20.4pt' o:ole=""> <v:imagedata src="xxdsb07.files/image263.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="37" height="27" v:shapes="_x0000_i1182" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image264.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1182" DrawAspect="Content" ObjectID="_1604819097"> </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"">可以是（</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"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">17、<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"><span style="position:relative; top:2.0pt;mso-text-raise:-2.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1111" type="#_x0000_t75" style='width:14.4pt;height:12.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image074.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="19" height="17" v:shapes="_x0000_i1111" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image123.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1111" DrawAspect="Content" ObjectID="_1604819184"> </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"">的数学期望</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:51pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image144.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="68" height="21" v:shapes="_x0000_i1112" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image145.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1112" DrawAspect="Content" ObjectID="_1604819185"> </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"">，方差</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_i1113" type="#_x0000_t75" style='width:56.4pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image146.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="75" height="25" v:shapes="_x0000_i1113" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image147.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1113" DrawAspect="Content" ObjectID="_1604819186"> </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"">，则由切比雪夫不等式有</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_i1114" type="#_x0000_t75" style='width:88.8pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image148.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="118" height="21" v:shapes="_x0000_i1114" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image149.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1114" DrawAspect="Content" ObjectID="_1604819187"> </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">33、<span lang="EN-US" style="mso-no-proof:yes"> <!--[if gte vml 1]><v:shape id="图片_x0020_1" o:spid="_x0000_i1172" type="#_x0000_t75" style='width:403.2pt; height:65.4pt;visibility:visible'> <v:imagedata src="xxdsb07.files/image243.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="538" height="87" v:shapes="图片_x0020_1" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image244.jpg"> <!--[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">31、<span lang="EN-US" style="font-size:12.0pt">10</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"">万粒种子有</span><span lang="EN-US" style="font-size:12.0pt">1</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"">万粒不发芽，今从中任取</span><span lang="EN-US" style="font-size:12.0pt">100</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"">粒，则至少有</span><span lang="EN-US" style="font-size:12.0pt">80</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"">粒发芽的概率是（</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"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">38、<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"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1125" type="#_x0000_t75" style='width:82.8pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image166.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="110" height="25" v:shapes="_x0000_i1125" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image167.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1125" DrawAspect="Content" ObjectID="_1604819198"> </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"">为独立同分布序列，且</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1126" type="#_x0000_t75" style='width:69pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb09.files/image168.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="92" height="25" v:shapes="_x0000_i1126" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image169.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1126" DrawAspect="Content" ObjectID="_1604819199"> </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"">服从参数为</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_i1127" type="#_x0000_t75" style='width:11.4pt;height:14.4pt' o:ole=""> <v:imagedata src="xxdsb09.files/image170.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="15" height="19" v:shapes="_x0000_i1127" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image171.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1127" DrawAspect="Content" ObjectID="_1604819200"> </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"">的指数分布，则下面式子中正确的是（</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"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">17、<span lang="EN-US" style="font-size:12.0pt"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1194" type="#_x0000_t75" style='width:137.4pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image284.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="183" height="25" v:shapes="_x0000_i1194" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image285.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1194" DrawAspect="Content" ObjectID="_1604819150"> </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:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1195" type="#_x0000_t75" style='width:15.6pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image286.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="21" height="25" v:shapes="_x0000_i1195" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image287.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1195" DrawAspect="Content" ObjectID="_1604819151"> </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"">与</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1196" type="#_x0000_t75" style='width:16.8pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image288.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="22" height="25" v:shapes="_x0000_i1196" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image289.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1196" DrawAspect="Content" ObjectID="_1604819152"> </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"">相互独立，则</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1197" type="#_x0000_t75" style='width:51pt;height:18.6pt' o:ole=""> <v:imagedata src="xxdsb08.files/image290.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="68" height="25" v:shapes="_x0000_i1197" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image291.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1197" DrawAspect="Content" ObjectID="_1604819153"> </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" align="left" style="text-align:left;mso-pagination:widow-orphan; vertical-align:middle">21、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_9" o:spid="_x0000_i1033" type="#_x0000_t75" style='width:267pt;height:18pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds02.files/image009.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="356" height="24" v:shapes="图片_x0020_9" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image009.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">2、<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_i1027" type="#_x0000_t75" style='width:84pt;height:15.6pt' o:ole=""> <v:imagedata src="xxdsb10.files/image003.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="112" height="21" v:shapes="_x0000_i1027" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image004.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1027" DrawAspect="Content" ObjectID="_1604906002"> </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"">，即</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_i1028" type="#_x0000_t75" style='width:9.6pt;height:11.4pt' o:ole=""> <v:imagedata src="xxdsb10.files/image005.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="13" height="15" v:shapes="_x0000_i1028" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image006.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1028" DrawAspect="Content" ObjectID="_1604906003"> </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"">服从参数为</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_i1029" type="#_x0000_t75" style='width:11.4pt;height:14.4pt' o:ole=""> <v:imagedata src="xxdsb10.files/image007.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="15" height="19" v:shapes="_x0000_i1029" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image008.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1029" DrawAspect="Content" ObjectID="_1604906004"> </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"">的泊松分布，则</span><span lang="EN-US" style="font-size:12.0pt"><span style="position:relative; top:14.0pt;mso-text-raise:-14.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1030" type="#_x0000_t75" style='width:38.4pt;height:33pt' o:ole=""> <v:imagedata src="xxdsb10.files/image009.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="51" height="44" v:shapes="_x0000_i1030" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image010.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1030" DrawAspect="Content" ObjectID="_1604906005"> </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="margin-left:30.0pt;text-indent:-30.0pt;mso-char-indent-count: -2.5;line-height:150%">24、<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"">对于正态分布</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%;position:relative;top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1400" type="#_x0000_t75" style='width:63pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image474.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="84" height="22" v:shapes="_x0000_i1400" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image525.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"">，抽取容量为</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">10</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"">的样本，算得样本均值</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:3.0pt;mso-text-raise:-3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1401" type="#_x0000_t75" style='width:47.4pt;height:15pt'> <v:imagedata src="xxdsb11.files/image526.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="63" height="20" v:shapes="_x0000_i1401" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image527.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"">，样本方差</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:3.0pt;mso-text-raise:-3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1402" type="#_x0000_t75" style='width:60.6pt;height:15pt'> <v:imagedata src="xxdsb11.files/image528.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="81" height="20" v:shapes="_x0000_i1402" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image529.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"">，给定显著水平</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:3.0pt;mso-text-raise:-3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1403" type="#_x0000_t75" style='width:45pt;height:13.2pt'> <v:imagedata src="xxdsb11.files/image530.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="60" height="18" v:shapes="_x0000_i1403" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image531.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"">，检验假设</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%;position:relative; top:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1404" type="#_x0000_t75" style='width:56.4pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image532.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="75" height="22" v:shapes="_x0000_i1404" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image533.png"> <!--[endif]--> <!--[if gte vml 1]><v:shape id="_x0000_i1405" type="#_x0000_t75" style='width:26.4pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image534.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="35" height="22" v:shapes="_x0000_i1405" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image535.png"> <!--[endif]--></span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"> <o:p></o:p></span></p> <p class="MsoNormal" style="margin-left:30.0pt;text-indent:-30.0pt;mso-char-indent-count: -2.5;line-height:150%"><span lang="EN-US" style="font-size:12.0pt;line-height: 150%"><span style="mso-tab-count:1"> </span><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1406" type="#_x0000_t75" style='width:43.2pt;height:13.2pt'> <v:imagedata src="xxdsb11.files/image536.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="58" height="18" v:shapes="_x0000_i1406" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image537.png"> <!--[endif]--></span>.</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"">则正确的方法和结论是（</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%"> <o:p></o:p></span></p>