Question: The rejection region for testing H 0:= 80 vs. H 1: < 80, at the 0.10 level of significance is: z > 1.28 z <

The rejection region for testingH0:= 80 vs.H1:< 80, at the 0.10 level of significance is:

z > 1.28

z < -1.28

z < 0.90

z > 1.96

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