• 2022-05-30 问题

    用计算机求2.733,按键顺序是();使用计算器计算时,按键顺为,则计算结果为()

    用计算机求2.733,按键顺序是();使用计算器计算时,按键顺为,则计算结果为()

  • 2022-06-09 问题

    设总体[img=101x27]1802dac8063391b.png[/img],[img=36x26]1802dac80e9df68.png[/img]未知,从总体中抽取容量为9的样本,测得样本方差[img=16x22]1802dac81754fb2.png[/img]=0.81,取显著水平为0.05,记假设1:[img=194x26]1802dac81f15e80.png[/img],假设2:[img=194x26]1802dac827c112d.png[/img]。则以下哪个拒绝域是正确的?(备用数据为:[img=136x27]1802dac8306e0b1.png[/img][img=136x27]1802dac83926ddb.png[/img][img=142x27]1802dac846f2ebc.png[/img][img=142x27]1802dac8530da26.png[/img][img=127x27]1802dac8601f188.png[/img][img=127x27]1802dac86e01b9a.png[/img][img=133x27]1802dac87c01d38.png[/img][img=133x27]1802dac8875b857.png[/img])‍ A: 对于假设1,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.18,或8‍[img=35x25]1802dac8989dc80.png[/img]17.535. B: 对于假设2,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.733‍. C: 对于假设1,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.733,或8‍[img=35x25]1802dac8989dc80.png[/img]15.507. D: 对于假设1,拒绝域为9[img=35x25]1802dac890367d9.png[/img]2.7,或9[img=35x25]1802dac8989dc80.png[/img]19.023. E: 对于假设1,拒绝域为9[img=35x25]1802dac890367d9.png[/img]3.325,或9‍[img=35x25]1802dac8989dc80.png[/img]16.919. F: 对于假设2,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.18‍. G: 对于假设2,拒绝域为9[img=35x25]1802dac890367d9.png[/img]2.7. H: 对于假设2,拒绝域为9[img=35x25]1802dac890367d9.png[/img]3.325‍.

    设总体[img=101x27]1802dac8063391b.png[/img],[img=36x26]1802dac80e9df68.png[/img]未知,从总体中抽取容量为9的样本,测得样本方差[img=16x22]1802dac81754fb2.png[/img]=0.81,取显著水平为0.05,记假设1:[img=194x26]1802dac81f15e80.png[/img],假设2:[img=194x26]1802dac827c112d.png[/img]。则以下哪个拒绝域是正确的?(备用数据为:[img=136x27]1802dac8306e0b1.png[/img][img=136x27]1802dac83926ddb.png[/img][img=142x27]1802dac846f2ebc.png[/img][img=142x27]1802dac8530da26.png[/img][img=127x27]1802dac8601f188.png[/img][img=127x27]1802dac86e01b9a.png[/img][img=133x27]1802dac87c01d38.png[/img][img=133x27]1802dac8875b857.png[/img])‍ A: 对于假设1,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.18,或8‍[img=35x25]1802dac8989dc80.png[/img]17.535. B: 对于假设2,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.733‍. C: 对于假设1,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.733,或8‍[img=35x25]1802dac8989dc80.png[/img]15.507. D: 对于假设1,拒绝域为9[img=35x25]1802dac890367d9.png[/img]2.7,或9[img=35x25]1802dac8989dc80.png[/img]19.023. E: 对于假设1,拒绝域为9[img=35x25]1802dac890367d9.png[/img]3.325,或9‍[img=35x25]1802dac8989dc80.png[/img]16.919. F: 对于假设2,拒绝域为8[img=35x25]1802dac890367d9.png[/img]2.18‍. G: 对于假设2,拒绝域为9[img=35x25]1802dac890367d9.png[/img]2.7. H: 对于假设2,拒绝域为9[img=35x25]1802dac890367d9.png[/img]3.325‍.

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