Ataxi driver had 44 fares to and from the airport last monday. the price for a ride to the airport is $7, and the price for a ride from the airport is $6. the driver collected a total of $289 for the day.

let x represent the number of trips to the airport and y represent the number of trips from the airport. write the ordered pair (x, y) that represents the solution in this situation.

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)?