A sample of 38 observations is selected from a normal population. The sample mean is 47,…

A sample of 38 observations is selected from a normal
population. The sample mean is 47, and the population standard
deviation is 7. Conduct the following test of hypothesis using the
0.05 significance level. H0: μ = 48;
H1: μ ≠ 48      (20
pts)

Is this a one- or two-tailed test

What is the decision rule?

What is the value of the test statistic?

What is your decision regarding H0?