A random sample of 80 observations from a population with a population mean of 198 and a population standard deviation of 15 yielded a sample mean of 190.

a. Construct a hypothesis test with the alternative hypothesis that<198 at a 1% significance level. Interpret your results.

b. Construct a hypothesis test with the alternative hypothesis that198 at a 1% significance level. Interpret your results.

c. State the Type I error you might make in partsaandb.