Question: Basic Computation: Find Test Statistic, Corresponding P-value, and Conclude Test A random sample of size 20 from a normal distribution with s 5 4 produced

Basic Computation: Find Test Statistic, Corresponding P-value, and Conclude Test A random sample of size 20 from a normal distribution with s 5 4 produced a sample mean of 8.

(a) Check Requirements Is the x distribution normal?

Explain.

(b) Compute the sample test statistic z under the null hypothesis H0 : m 57.

(c) For H1: m ? 7, estimate the P-value of the test statistic.

(d) For a level of significance of 0.05 and the hypotheses of parts

(b) and (c), do you reject or fail to reject the null hypothesis? Explain.

AppendixLO1

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