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

返回

Mangogo · 2019年12月03日

问一道题：NO.PZ2015120604000136

  1. CFA I
  2. Quantitative

问题如下：

Suppose a hypothesis test with a 5% significant level. What is the critical value of a z-statistic if it is a two-tailed test?

选项：

A.

±1.65

B.

±1.96.

C.

+1.96

解释：

B is correct.

A two-tailed z-test at a 5% significant level means the critical value is z=-1.96 or z=+1.96.

老师好，我怎么确定题中说的是双尾加起来5%而不是一边各5%呢

添加评论
1 个答案

星星_品职助教 · 2019年12月04日

同学你好，

题干中说significance level是5%，然后又是一个two-tailed test。就相当于两个尾巴加起来一共是5%。

如果是单尾的话，会说significance level=5%，同时是one-tailed test。加油~

  • 1

    回答

  • 0

    关注

  • 483

    浏览
相关问题

NO.PZ2015120604000136问题如下Suppose a hypothesis test with a 5% significant level. Whis the criticvalue of a z-statistic if it is a two-tailetest?A.±1.65B.±1.96.C.+1.96B is correct.A two-tailez-test a 5% significant level means the criticvalue is z=-1.96 or z=+1.96.为什么reject的部分叫significant level呢？

2023-08-28 14:08 1 · 回答

NO.PZ2015120604000136问题如下 Suppose a hypothesis test with a 5% significant level. Whis the criticvalue of a z-statistic if it is a two-tailetest?A.±1.65B.±1.96.C.+1.96B is correct.A two-tailez-test a 5% significant level means the criticvalue is z=-1.96 or z=+1.96.双尾检验应该是有两个值，为啥只要正的

2023-04-10 20:14 1 · 回答

请问如果是单尾检验，criticvalue是正负还是只有一个？

2020-08-01 12:29 1 · 回答

    这一题B C 答案一样

2017-11-09 21:00 1 · 回答