开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

VincentShell · 2022年12月14日

请老师翻译一下

NO.PZ2018062016000124

问题如下:

Which of the following descriptions on a two-tailed hypothesis test is least correct?

选项:

A.

A two-tailed test is less directive than a one-tailed test. 

B.

The alternative hypotheses of one-tailed tests has less impacts on the researcher's beliefs than the alternative hypotheses of two-tailed tests. 

C.

Under the same significance level, the absolute value of two-tailed test's rejection points is larger than the one of one-tailed test.

解释:

B is correct. A two-tailed test is a “not equal to” alternative hypothesis, while a one-tailed test is a “greater than” or “less than” alternative hypothesis. “greater than” or “less than” alternative hypotheses reflect the beliefs of the researcher more strongly than a "not equal to" alternative hypothesis.

老师这道题的选项翻译一下吧,看不是很懂

1 个答案
已采纳答案

星星_品职助教 · 2022年12月15日

同学你好,

A选项的描述为双尾检验不如单尾检验有方向性或指向性。这个描述是正确的,双尾检验只能看出不等于的关系,确定不了是大于还是小于。而单尾检验可以直接得出具体的方向。

B选项的描述为相对于单尾检验,双尾检验的备择假设更能反应出研究者对于该研究的信心程度。这个描述说反了,原因和A选项是一样的,即单尾检验有明确的指向性,所以是更能反应研究者信心的一方。

C选项的描述为当significant level相同时,双尾检验的关键值(的绝对值)要比单尾检验的大。这个描述也是正确的。用正态分布下5%的significant level作为例子就可以看出,双尾检验的关键值(的绝对值)为1.96,单尾的关键值为1.645,所以确实是双尾的大。

由于本题要选择“least correct”,所以选择B选项。

-----

此后提问需要具体说明每个选项及答案解析(如有)看不明白的地方。

  • 1

    回答
  • 1

    关注
  • 507

    浏览
相关问题

NO.PZ2018062016000124问题如下Whiof the following scriptions on a two-tailehypothesis test is least correct?A.A two-tailetest is less rective tha one-tailetest. B.The alternative hypotheses of one-tailetests hless impacts on the researcher's beliefs ththe alternative hypotheses of two-tailetests. C.Unr the same significanlevel, the absolute value of two-tailetest's rejection points is larger ththe one of one-tailetest.B is correct. A two-tailetest is a “not equto” alternative hypothesis, while a one-tailetest is a “greater than” or “less than” alternative hypothesis. “greater than” or “less than” alternative hypotheses reflethe beliefs of the researcher more strongly tha \"not equto\" alternative hypothesis.老师,我这样理解是对的吗双尾显著水平5%,置信区间95%;单位显著水平5%,置信区间也应该是95%是吧,但是看其他同学提问下如果解答,感觉是也算上一侧的5%,然后90%得出关键值+-1.65.感觉自己没太弄懂,谢谢!

2024-03-07 02:06 1 · 回答

NO.PZ2018062016000124 问题如下 Whiof the following scriptions on a two-tailehypothesis test is least correct? A.A two-tailetest is less rective tha one-tailetest. B.The alternative hypotheses of one-tailetests hless impacts on the researcher's beliefs ththe alternative hypotheses of two-tailetests. C.Unr the same significanlevel, the absolute value of two-tailetest's rejection points is larger ththe one of one-tailetest. B is correct. A two-tailetest is a “not equto” alternative hypothesis, while a one-tailetest is a “greater than” or “less than” alternative hypothesis. “greater than” or “less than” alternative hypotheses reflethe beliefs of the researcher more strongly tha \"not equto\" alternative hypothesis. 我感觉C 答案也是对的

2024-03-03 10:24 2 · 回答

NO.PZ2018062016000124 问题如下 Whiof the following scriptions on a two-tailehypothesis test is least correct? A.A two-tailetest is less rective tha one-tailetest. B.The alternative hypotheses of one-tailetests hless impacts on the researcher's beliefs ththe alternative hypotheses of two-tailetests. C.Unr the same significanlevel, the absolute value of two-tailetest's rejection points is larger ththe one of one-tailetest. B is correct. A two-tailetest is a “not equto” alternative hypothesis, while a one-tailetest is a “greater than” or “less than” alternative hypothesis. “greater than” or “less than” alternative hypotheses reflethe beliefs of the researcher more strongly tha \"not equto\" alternative hypothesis. B的翻译是不是单尾实验对实验者的信仰影响小于双尾实验,那意思就是在单尾实验中实验者更确定自己的偏向对吧?另外题目中的least correct是最不正确的意思对吗?两者是否有冲突?

2022-11-06 17:05 1 · 回答

NO.PZ2018062016000124 问题如下 Whiof the following scriptions on a two-tailehypothesis test is least correct? A.A two-tailetest is less rective tha one-tailetest. B.The alternative hypotheses of one-tailetests hless impacts on the researcher's beliefs ththe alternative hypotheses of two-tailetests. C.Unr the same significanlevel, the absolute value of two-tailetest's rejection points is larger ththe one of one-tailetest. B is correct. A two-tailetest is a “not equto” alternative hypothesis, while a one-tailetest is a “greater than” or “less than” alternative hypothesis. “greater than” or “less than” alternative hypotheses reflethe beliefs of the researcher more strongly tha \"not equto\" alternative hypothesis. 来源: 品职出题 Whiof the following scriptions on a two-tailehypothesis test is least correct?我是用排除法选的B,但是看不太懂B说的是什么意思。

2022-10-14 11:56 1 · 回答