A sample mean sample size and population standard deviation


A sample mean, sample size, and population standard deviation are given. Use the P-value appraoch to perform a one-mean z-test about the mean, μ, of the population from which the sample was drawn. Determine the strength of the evidence against the null hypothesis.

> n = 20, >, >, α = 0.05

A. z = 2.57; P-value = 0.0101; Reject H0. The evidence against the null hypothesis is strong.
B. z = 0.35; P-value = 0.7263; Do not reject H0. The evidence against the null hypothesis is weak or none.
C. z = 1.57; P-value = 0.1164; Do not reject H0. The evidence against the null hypothesis is weak or none.
D. z = 1.57; P-value = 0.0582; Do not reject H0. The evidence against the null hypothesis is moderate

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Basic Statistics: A sample mean sample size and population standard deviation
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