Can the values be added or subtracted? if one value needs to be converted to another, describe the conversion 19.75 in² + 26.2 in³. a. the values cannot be added because one is measuring area and the other is measuring volume. b. the values can be added without making a conversion of units because they both measure area. c. the values can be added after making a conversion of units because they both measure area. d. the values cannot be added because one is measuring area and the other is measuring mass.

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)?