SOLUTION: Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
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Question 462373: Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
(A) Ho:u ≥ 81 and Ha: u < 81 , = 0.05
(B) Ho:u = 45 and Ha: u not equal 45, = 0.10
(C) Ho:u ≤ 88 and Ha: u >88, = 0.01
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