Jonathan bought a table and some chairs at a furniture store. the equation that models this situation is y=25x+80, where y is the amount of money he spent and x is the number of chairs he bought. what does the y-intercept mean in this solution? a. he paid $25 for the table. b. he paid $80 for the table. c. he paid $25 for each chair. d. he paid $80 for each chair.

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)?