Beth wanted to buy vegetables, She noticed that brand A of black beans was on sale for 4 cans 87 cents. Brand B was 3 cans for 79 cents. Which was a better buy Brand was a better buy because 79 cents is less than brand A which was 87 cents. Brand was a better buy because those beans were 26.33 per can Brand A was a better buy because those beans were 21.75 cents per can. Brand A was a better buy because those beans were a better brand

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)?