(Answered) To test h0 mu 45 versus h1 mu ne 45 a simple random sample

Statistics

To test H0: μ = 45 versus H1: μ ≠ 45, a simple random sample of size n = 40 is obtained.

(a) Does the population have to be normally distributed to test this hypothesis by using the methods presented in this section? Why?

(b) If = 48.3 and s = 8.5, compute the test statistic.

(d) Determine and interpret the P-value.

(e) If the researcher decides to test this hypothesis at the α = 0.01 level of significance, will the researcher reject the null hypothesis? Why?

(f) Construct a 99% confidence interval to test the hypothesis.

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