Consider a random sample of size 48 from a population with hypothesized mean 365.25 and s 5 22.3.
a. Write the four parts for a two-sided hypothesis test concerning the population mean with a = 0.05.
b. What assumptions are necessary in order for the test in part (a) to be appropriate?
c. Suppose the sample mean is x‾ = 360.0. Find the value of the test statistic, and draw a conclusion about the population mean.