Question

A study investigated the job satisfaction of teachers allowed to choose supplementary curriculum for their classes versus teachers who were assigned all curricular resources for use in their classes. The authors of the study wanted to know if the two groups of teachers had different levels of job satisfaction. They will use a significance level of 5% for their test. Upper-Tail Values a 5% 2.5% 1% Critical z-values 1.65 1.96 2.58 What is (are) the critical value(s) for z in this study?

Answer 1

B. –1.96 and 1.96

Explanation:

on edge

Answer 2

We are given with
5% significance level
Upper-tail values:
5%, 2.5%, and 1%
Critical z-values:
1.65, 1.96, and 2.58

For a 5% significance level, the normal critical z-value is
1.96

Among the choices, for an upper tail value of 5%, the critical z-value is 1.96