1. A manufacturer of floor mops would like his product to last 700 hours, on the average. He hopes the mean number of hours is not a lot less than 700 (people will not continue to buy his product) or a lot more than 700 (people would seldom have to buy the product). However, the manufacturer has reason to believe the mean may have changed. A random sample of 48 items shows thatX = 675 and s = 77 hours. (a) Using the rejection region approach complete the test at the 5% level of significance. (b) What is the p-value of the test