【单选题】
(),也是国际争端的焦点。我们要敢于斗争、善于斗争,决不放弃正当权益,决不牺牲国家核心利益。
【单选题】
设<imgwidth="106"height="25"v:shapes="_x0000_i1066"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image071.png">,则服从<imgwidth="19"height="17"v:shapes="_x0000_i1067"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb10.files/image002.png">()分布
【单选题】
<imgwidth="16"height="17"v:shapes="_x0000_i1037"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image012.png">之积为不可能事件,则称<imgwidth="16"height="17"v:shapes="_x0000_i1038"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image010.png">与<imgwidth="16"height="17"v:shapes="_x0000_i1039"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image012.png">()
【单选题】
设<imgwidth="110"height="21"v:shapes="_x0000_i1082"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image113.png">是连续型随机变量<imgwidth="19"height="17"v:shapes="_x0000_i1083"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image002.png">的分布函数,则下列结论中不正确的是()
①
<imgwidth="36"height="21"v:shapes="_x0000_i1084"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image115.png">不是不减函数
②
<imgwidth="36"height="21"v:shapes="_x0000_i1085"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image115.png">是不减函数
③
<imgwidth="36"height="21"v:shapes="_x0000_i1086"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image115.png">是右连续的
④
<imgwidth="143"height="21"v:shapes="_x0000_i1087"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image117.png">
【单选题】
设二维随机变量<imgwidth="187"height="26"v:shapes="_x0000_i1135"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image189.png">,且<imgwidth="19"height="17"v:shapes="_x0000_i1136"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image127.png">与<imgwidth="15"height="17"v:shapes="_x0000_i1137"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image185.png">相互独立,则()
①
<imgwidth="50"height="25"v:shapes="_x0000_i1138"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image191.png">
②
<imgwidth="115"height="26"v:shapes="_x0000_i1139"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image193.png">
③
<imgwidth="61"height="26"v:shapes="_x0000_i1140"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image195.png">
④
<imgwidth="40"height="21"v:shapes="_x0000_i1141"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image197.png">
【单选题】
下列各函数中是随机变量分布函的为()
①
<imgwidth="179"height="41"v:shapes="_x0000_i1211"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image319.png">
②
<imgwidth="132"height="69"v:shapes="_x0000_i1212"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image321.png">
③
<imgwidth="160"height="26"v:shapes="_x0000_i1213"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image323.png">
④
<imgwidth="240"height="41"v:shapes="_x0000_i1214"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image325.png">
【单选题】
<imgwidth="466"height="185"v:shapes="图片_x0020_1"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image388.png">
①
<imgwidth="90"height="42"v:shapes="_x0000_i1254"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image390.png">
②
<imgwidth="88"height="22"v:shapes="_x0000_i1255"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image392.png">
③
<imgwidth="90"height="42"v:shapes="_x0000_i1256"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image394.png">
④
<imgwidth="90"height="42"v:shapes="_x0000_i1257"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb08.files/image396.png">
【单选题】
对于正态分布<imgwidth="84"height="22"v:shapes="_x0000_i1400"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image525.png">,抽取容量为10的样本,算得样本均值<imgwidth="63"height="20"v:shapes="_x0000_i1401"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image527.png">,样本方差<imgwidth="81"height="20"v:shapes="_x0000_i1402"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image529.png">,给定显著水平<imgwidth="60"height="18"v:shapes="_x0000_i1403"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image531.png">,检验假设<imgwidth="75"height="22"v:shapes="_x0000_i1404"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image533.png"><imgwidth="35"height="22"v:shapes="_x0000_i1405"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image535.png"><imgwidth="58"height="18"v:shapes="_x0000_i1406"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image537.png">.则正确的方法和结论是()
①
用<imgwidth="12"height="14"v:shapes="_x0000_i1407"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image539.png">检验法,查临界值表知<imgwidth="78"height="22"v:shapes="_x0000_i1408"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image541.png">,拒绝<imgwidth="22"height="22"v:shapes="_x0000_i1409"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image465.png">
②
用<imgwidth="12"height="14"v:shapes="_x0000_i1410"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image539.png">检验法,查临界值表知<imgwidth="75"height="22"v:shapes="_x0000_i1411"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image544.png">,拒绝<imgwidth="22"height="22"v:shapes="_x0000_i1412"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image465.png">
③
用<imgwidth="12"height="14"v:shapes="_x0000_i1413"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image546.png">检验法,查临界值表知<imgwidth="102"height="22"v:shapes="_x0000_i1414"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image548.png">,拒绝<imgwidth="22"height="22"v:shapes="_x0000_i1415"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image465.png">
④
用<imgwidth="12"height="14"v:shapes="_x0000_i1416"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image546.png">检验法,查临界值表知<imgwidth="84"height="22"v:shapes="_x0000_i1417"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image550.png">,拒绝<imgwidth="22"height="22"v:shapes="_x0000_i1418"src="http://wljy.whut.edu.cn:80/uploadfiles/word/xxdsb11.files/image465.png">
【单选题】
<imgwidth="526"height="53"v:shapes="图片_x0020_151"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image149.png">
①
<imgwidth="51"height="28"v:shapes="图片_x0020_152"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image150.png">
②
<imgwidth="66"height="22"v:shapes="图片_x0020_153"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image151.png">
③
<imgwidth="46"height="23"v:shapes="图片_x0020_154"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image152.png">
④
<imgwidth="46"height="22"v:shapes="图片_x0020_155"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds01.files/image153.png">
【单选题】
小王后还剩52张牌中一张一张有放回地取4张,则恰有3张是黑桃的概率为()
①
<imgwidth="48"height="48"v:shapes="_x0000_i1087"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image122.png">
②
<imgwidth="84"height="49"v:shapes="_x0000_i1088"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image124.png">
③
<imgwidth="64"height="48"v:shapes="_x0000_i1089"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image126.png">
④
<imgwidth="61"height="48"v:shapes="_x0000_i1090"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image128.png">