Assume that SAT scores can be taken to be normally distributed with a = 100. A sampling of 25 members of an entering freshman class yields x = 580. We wish to test the hypotheses at significance level...



Assume that SAT scores can be taken to be normally distributed


with a = 100. A sampling of 25 members of an entering freshman


class yields x = 580. We wish to test the hypotheses


at significance level 0.05. Evidence for H1 will suggest a decline in the test scores for this entering class.


(a) Find the critical region for this test.


(b) What decision is made between H0 and H1 ?



May 26, 2022
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