Given below are the ages of 45 people in a colony. 33 8 7 25 31 26 5 50 25 48 56 33 28 22 15 62 59 16 14 19 2435 26 9 12 46 15 42 63 32 5 22 11 42 23 52 48 62 10 24 43 51 37 48 36
Construct grouped frequency distribution for the given data with 6 class intervals.​

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)?