Based upon a random sample of 1,120 Americans 15 years or older, the mean amount of time spent eating or drinking each and every day is 1.23 hours. Part A. Supposing that the population standard deviation for amount of time spent eating or drinking is 0.65 hour develop a 90% confidence interval for mean amount of time spent eating or drinking each day by Americans 15 years or older. Part B. Is it possible that adult Americans spend more than hour and half eating and drinking each day, on average? Explain.