Question

The z statistic for a one-sided test is z = 2.41 for Ha: m > m0....

The z statistic for a one-sided test is z = 2.41 for Ha: m > m0. This test is

(A) not statistically significant at either a = 0.05 or a = 0.01.

(B) statistically significant at a = 0.05 but not at a = 0.01.

(C) statistically significant at both a = 0.05 and a = 0.01

You are testing Ho: m =0 against Ha: m ≠ 0 based on an SRS of 20 observations from a Normal population. What values of the z statistic are statistically significant at a = 0.005 level?

(A) All values for which z > 2.576

(B) All values for which z > 2.807

(C) All values for which |z| > 2.807

Math   Statistics-And-Probability   
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Answer #1

P-value = 0.008<0.01<0.05

Ans : (C) statistically significant at both a = 0.05 and a = 0.01

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Ans : (C) All values for which |z| > 2.807

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