Question: Identify the 1) null hypothesis (Ho), 2) the alternative hypothesis (H1), and 3) either identify the sampling distribution (normal, t, chi-square) of the test statistic, or state that the methods of Chapter 8 should not be used and why. No calculations are required.

Claim: the population mean is 425. Sample data: n = 18, x bar = 438, s=21.3. The data were taken from a simple random sample collected from a normally distributed population with a population standard deviation \(\sigma \) of 18.4