• 2022-06-09
    从正态总体中随机抽取样本,若总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]未知,则样本平均数的分布为
    未知类型:{'options': ['正态分布', '[tex=1.0x1.286]t0VPtxOeKW4wvIBgVm0Tng==[/tex]分布', 't分布', 'F分布'], 'type': 102}
  • C

    举一反三

    内容

    • 0

      总体分布正态,总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]知时,从总体中随机抽取容量为25的小样本,用样本平均数估计总体平均数的置信区间为 未知类型:{'options': ['[tex=13.5x2.429]DzIVuM/MGk4xQmlFQiODO0d4kwcRaAYJaDodsdcIbUVo8YFuB5n8BXzUWveK4Q9vXcDcZ8CiaeUVfGcuj5jkT+812iG22CCiZTzSmKIMLBc=[/tex]', '[tex=12.857x2.429]rIg8UNE5kyRqbvnR9dJdGRFDYfY64Z/y/PcdnwXfg70AMYD0xcpOkcmDaQCZr0SrVqllLfXnhymSWRVKqngimRc9iVAEuQaqZv9CkkZkqXA=[/tex]', '[tex=16.071x2.429]DzIVuM/MGk4xQmlFQiODOz0cvDQdwWo5dXcoU8p57aWlka/cHDJS0oj8E11Lzu6ZJ4Y7AbuJIrTuWErlqIQysqOp09WD8tWRLLySgXHKcTjhSQp8SP1AikT6db+PjQ6h[/tex]', '[tex=15.429x2.429]rIg8UNE5kyRqbvnR9dJdGS0zPoSmHwJ0ShWfeshmO8kU8mlwt7jytSzsYbjIbv9gInwZFoHw4bCecUs9/QUmgUb8TIFRr1shXJ+K9HInx2JdlfdAJkBGVuu2kRH9qwqW[/tex]'], 'type': 102}

    • 1

      总体分布正态,总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]知时,从总体中随机抽取容量为25的小样本,用样本平均数估计总体平均数的置信区间为 未知类型:{'options': ['[tex=13.5x2.429]DzIVuM/MGk4xQmlFQiODO0d4kwcRaAYJaDodsdcIbUVo8YFuB5n8BXzUWveK4Q9vXcDcZ8CiaeUVfGcuj5jkT+812iG22CCiZTzSmKIMLBc=[/tex]', '[tex=12.857x2.429]rIg8UNE5kyRqbvnR9dJdGRFDYfY64Z/y/PcdnwXfg70AMYD0xcpOkcmDaQCZr0SrVqllLfXnhymSWRVKqngimRc9iVAEuQaqZv9CkkZkqXA=[/tex]', '[tex=16.071x2.429]DzIVuM/MGk4xQmlFQiODOz0cvDQdwWo5dXcoU8p57aWlka/cHDJS0oj8E11Lzu6ZJ4Y7AbuJIrTuWErlqIQysqOp09WD8tWRLLySgXHKcTjhSQp8SP1AikT6db+PjQ6h[/tex]', '[tex=15.429x2.429]rIg8UNE5kyRqbvnR9dJdGS0zPoSmHwJ0ShWfeshmO8kU8mlwt7jytSzsYbjIbv9gInwZFoHw4bCecUs9/QUmgUb8TIFRr1shXJ+K9HInx2JdlfdAJkBGVuu2kRH9qwqW[/tex]'], 'type': 102}

    • 2

      总体分布正态,总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]已知时,从总体中随机抽取容量为25的小样本,用样本平均数估计总体平均数的置信区间为 未知类型:{'options': ['[tex=13.5x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkMGG6R8CGPJ5U7Fu+Jarjt+LooagvhadQrvrI/J4dmKn6ORncRY+0d3x2aVH72qZAg+84kyw+b9UmYVDLEHmfxD[/tex]', '[tex=12.857x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198n4xE0CnX2UcmnJLPSOuuPrAyCXHCiXfJSfdtqe/Ik7kOUtVombsb+cGQEYJliiTiETyu3cHGfhaQTX2RGyb3Mb[/tex]', '[tex=16.071x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkOH8tHzWRZRCmrsZPY5lgj57lUp++hLgB5zQ/Dn59gCfcUldu/46ohQ9r0B90q4QTbKmJpTJ4nswHvFqxc9ZDqd[/tex]', '[tex=15.429x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198m15jwH2O3Ma18RK8xeZ8osNljjtiR2a6joRlMKLlinCmYUeM2/WkFE3z4ZYpzNdtMz1OCH6bjsdYabZEYQpjcm[/tex]'], 'type': 102}

    • 3

      总体分布正态,总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]已知时,从总体中随机抽取容量为25的小样本,用样本平均数估计总体平均数的置信区间为 未知类型:{'options': ['[tex=13.5x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkMGG6R8CGPJ5U7Fu+Jarjt+LooagvhadQrvrI/J4dmKn6ORncRY+0d3x2aVH72qZAg+84kyw+b9UmYVDLEHmfxD[/tex]', '[tex=12.857x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198n4xE0CnX2UcmnJLPSOuuPrAyCXHCiXfJSfdtqe/Ik7kOUtVombsb+cGQEYJliiTiETyu3cHGfhaQTX2RGyb3Mb[/tex]', '[tex=16.071x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkOH8tHzWRZRCmrsZPY5lgj57lUp++hLgB5zQ/Dn59gCfcUldu/46ohQ9r0B90q4QTbKmJpTJ4nswHvFqxc9ZDqd[/tex]', '[tex=15.429x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198m15jwH2O3Ma18RK8xeZ8osNljjtiR2a6joRlMKLlinCmYUeM2/WkFE3z4ZYpzNdtMz1OCH6bjsdYabZEYQpjcm[/tex]'], 'type': 102}

    • 4

      总体分布正态,总体方差[tex=1.0x1.286]Rx0l9lkKLR0hsh9BQCKuow==[/tex]已知时,从总体中随机抽取容量为25的小样本,用样本平均数估计总体平均数的置信区间为 未知类型:{'options': ['[tex=13.5x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkMGG6R8CGPJ5U7Fu+Jarjt+LooagvhadQrvrI/J4dmKn6ORncRY+0d3x2aVH72qZAg+84kyw+b9UmYVDLEHmfxD[/tex]', '[tex=12.857x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198n4xE0CnX2UcmnJLPSOuuPrAyCXHCiXfJSfdtqe/Ik7kOUtVombsb+cGQEYJliiTiETyu3cHGfhaQTX2RGyb3Mb[/tex]', '[tex=16.071x2.429]jxozUzS2rBgTg/pd6AP5walWq2i+GtcIpl+AH9VQgkOH8tHzWRZRCmrsZPY5lgj57lUp++hLgB5zQ/Dn59gCfcUldu/46ohQ9r0B90q4QTbKmJpTJ4nswHvFqxc9ZDqd[/tex]', '[tex=15.429x2.429]d08/1m3BSdpcStZi4ycJqraq1sgT5Yna8bzTqfa198m15jwH2O3Ma18RK8xeZ8osNljjtiR2a6joRlMKLlinCmYUeM2/WkFE3z4ZYpzNdtMz1OCH6bjsdYabZEYQpjcm[/tex]'], 'type': 102}