成考院校在线答案
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:20.0pt;mso-line-height-rule:exactly">29、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_111" o:spid="_x0000_i1133" type="#_x0000_t75" style='width:332.4pt;height:24pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds01.files/image109.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="443" height="32" v:shapes="图片_x0020_111" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image109.png"> <!--[endif]--></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:150%">17、<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"">某人打靶的命中率为</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">0.8</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 class="GramE">现独立</span>地射击</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">5</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"">次，那么</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">5</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"">次中有</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">2</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"">次命中的概率</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%"> <o:p></o:p></span></p> <p class="MsoNormal" style="line-height:150%"><span lang="EN-US" style="font-size:12.0pt;line-height:150%"><span style="mso-tab-count:1"> </span><span style="mso-spacerun:yes"> </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"">为（</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> <p class="MsoNormal"><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p> </o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:20.0pt;mso-line-height-rule:exactly">18、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_72" o:spid="_x0000_i1094" type="#_x0000_t75" style='width:302.4pt;height:25.8pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds01.files/image070.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="403" height="34" v:shapes="图片_x0020_72" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image070.png"> <!--[endif]--></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:150%">19、<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%"><span style="position: relative;top:28.0pt;mso-text-raise:-28.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1269" type="#_x0000_t75" style='width:154.8pt;height:63pt' o:ole=""> <v:imagedata src="xxds03.files/image340.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="206" height="84" v:shapes="_x0000_i1269" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image341.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1269" DrawAspect="Content" ObjectID="_1604818995"> </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"">，如果方程组</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:3.0pt;mso-text-raise: -3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1270" type="#_x0000_t75" style='width:40.2pt;height:15pt' o:ole=""> <v:imagedata src="xxds03.files/image330.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="54" height="20" v:shapes="_x0000_i1270" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image331.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1270" DrawAspect="Content" ObjectID="_1604818996"> </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"">无解，则</span><span lang="EN-US" style="font-size:12.0pt; line-height:150%"><span style="position:relative;top:3.0pt;mso-text-raise: -3.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1271" type="#_x0000_t75" style='width:22.2pt;height:12pt' o:ole=""> <v:imagedata src="xxds03.files/image342.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="30" height="16" v:shapes="_x0000_i1271" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds03.files/image343.png"> <!--[endif]--></span> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1271" DrawAspect="Content" ObjectID="_1604818997"> </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>
- 2024-03-05 [单选] <p class="MsoNormal">30、<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_i1122" type="#_x0000_t75" style='width:47.4pt;height:15pt'> <v:imagedata src="xxdsb11.files/image169.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="63" height="20" v:shapes="_x0000_i1122" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image170.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</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_i1123" type="#_x0000_t75" style='width:9pt;height:10.8pt'> <v:imagedata src="xxdsb11.files/image171.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="14" v:shapes="_x0000_i1123" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image172.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"">的矩估计和极大似然估计分别为（</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><span lang="EN-US" style="mso-bidi-font-size:10.5pt"> <o:p></o:p></span></p>
- 2024-03-05 [单选] <p class="MsoNormal">36、<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_49" o:spid="_x0000_i1074" type="#_x0000_t75" style='width:390pt;height:72.6pt; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="xxds02.files/image056.png" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="520" height="97" v:shapes="图片_x0020_49" src="http://wljy.whut.edu.cn/uploadfiles/word/xxds02.files/image056.png"> <!--[endif]--></span></p>
- 2024-03-05 [单选] <p class="MsoNormal" style="line-height:150%">37、<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"">某人打靶的命中率为</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">0.4</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"">，现独立的射击</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">5</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"">次，那么</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">5</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"">次中有</span><span lang="EN-US" style="font-size:12.0pt;line-height:150%">2</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"">次命中的概率</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><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: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"><span style="color:white"> <o:p></o:p></span></span></p>
- 2024-03-05 [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;position:relative;top:6.0pt;mso-text-raise: -6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1188" type="#_x0000_t75" style='width:80.4pt;height:16.8pt'> <v:imagedata src="xxdsb10.files/image201.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="107" height="22" v:shapes="_x0000_i1188" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image202.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"">相互独立，且</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_i1189" type="#_x0000_t75" style='width:95.4pt;height:16.8pt'> <v:imagedata src="xxdsb10.files/image264.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="127" height="22" v:shapes="_x0000_i1189" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image265.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"">都服从参数为</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:12.0pt;mso-text-raise:-12.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1190" type="#_x0000_t75" style='width:9pt;height:27.6pt'> <v:imagedata src="xxdsb10.files/image266.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="37" v:shapes="_x0000_i1190" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image166.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"">的指数分布，则当</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_i1191" type="#_x0000_t75" style='width:9pt;height:10.8pt'> <v:imagedata src="xxdsb10.files/image254.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="14" v:shapes="_x0000_i1191" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image255.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"">充分大时，随机变量</span><span lang="EN-US" style="font-size:12.0pt;position:relative;top:14.0pt;mso-text-raise:-14.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1192" type="#_x0000_t75" style='width:73.2pt;height:36.6pt'> <v:imagedata src="xxdsb10.files/image267.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="98" height="49" v:shapes="_x0000_i1192" src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image268.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"">的概率分布近似服从于（</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>
- 2024-03-05 [单选] <p class="MsoNormal" style="margin-left:30.0pt;text-indent:-30.0pt;mso-char-indent-count: -2.5;line-height:150%">7、<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</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_i1425" type="#_x0000_t75" style='width:10.8pt;height:15pt'> <v:imagedata src="xxdsb11.files/image563.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="20" v:shapes="_x0000_i1425" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image564.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:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1426" type="#_x0000_t75" style='width:10.8pt;height:15pt'> <v:imagedata src="xxdsb11.files/image565.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="20" v:shapes="_x0000_i1426" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image566.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"">未知的情况下，对两个正态总体的方差</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_i1427" type="#_x0000_t75" style='width:10.8pt;height:15pt'> <v:imagedata src="xxdsb11.files/image567.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="20" v:shapes="_x0000_i1427" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image568.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"">和</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_i1428" type="#_x0000_t75" style='width:10.8pt;height:15pt'> <v:imagedata src="xxdsb11.files/image569.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="14" height="20" v:shapes="_x0000_i1428" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image570.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"">的检验问题为</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:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1429" type="#_x0000_t75" style='width:134.4pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image571.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="179" height="22" v:shapes="_x0000_i1429" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image572.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"">，对于显著水平</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_i1430" type="#_x0000_t75" style='width:9pt;height:9pt'> <v:imagedata src="xxdsb11.files/image439.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="12" height="12" v:shapes="_x0000_i1430" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image493.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:6.0pt;mso-text-raise:-6.0pt"> <!--[if gte vml 1]><v:shape id="_x0000_i1431" type="#_x0000_t75" style='width:16.8pt;height:16.8pt'> <v:imagedata src="xxdsb11.files/image573.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="22" height="22" v:shapes="_x0000_i1431" src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image465.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"">的拒绝域为（</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>
- 2024-03-05 [单选] <p class="MsoNormal">12、<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>