the average U.s. daily internet use at home is two hours

the average U.s. daily internet use at home is two hours and twenty minutes. A sample of 64 homes in soddy daisy showed an average usage of two hours and 50 minutes with a standard deviation of 80 minutes. We are interested in determining whether or not the average usage in soddy-daisy is significantly different from the U. S. average. a) State the null and alternative hypotheses to be tested. b) Compute the test statistic. c) the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test. d) What do you conclude?