Problem
Find the critical value(s) and rejection region(s) for the type of z-test with level of significance $\alpha$. Include a graph with your answer. Two-tailed test, $\alpha=0.09$ The critical value(s) is/are $z=-1.70,1.70$ (Round to two decimal places as needed. Use a comma to separate answers as needed.) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to two decimal places as needed.) A. The rejection region is $z<$ B. The rejection regions are $z<\square$ and $z>$ C. The rejection region is $z>$
Solution
Step 1 ：Given a two-tailed test with a level of significance of \(\alpha=0.09\).
Step 2 ：The critical values for this test are \(z=-1.70,1.70\).
Step 3 ：Since this is a two-tailed test, there are two rejection regions.
Step 4 ：The rejection regions are when \(z<-1.70\) and when \(z>1.70\).
Step 5 ：\(\boxed{\text{The rejection regions are } z<-1.70 \text{ and } z>1.70}\)
