Percentage of U. S. Population with Diagnosed Diabetes by Gender 1984 1994 2004 2014 Male 2.9% 3.0% 6.2% 6.8% Female 2.8% 3.1% 5.3% 6.0% Question 1: Whose percentage increased more from 1984 to 2014, male or females? By how much did it increase?

Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?