A social scientist is interested in determining if the Ameri

A social scientist is interested in determining if the Americans between the ages of 25 and 44 are becoming more educated as a group.

What value (or values) would mark the rejection region if we were to conduct a test that the true proportion of individuals with an associate’s degree or higher is greater than 0.383, the proportion reported by the U. S. Census Bureau at the 0.01 level of significance?

-1.645

1.96

2.33

-2.575 or 2.575

-2.33 and 2.33

Solution

As this is a right tailed test, at 0.01 level, the by table/technology,

zcrit = 2.33 [ANSWER, C]