D. 90 4. Mike and Tony are private baseball hitting instructors. Mike charges $12 for travel expenses
and $35 per hour of instruction. Tony's fee can be modeled by the equation C = 32h +20, where
h is the number of hours of hitting instruction. Both Mike and Tony will be giving four hours of
hitting instruction at different baseball camps.
What is the total fee that Mike charges for 4 hours of instruction?
$47.00
$83.00
$140.00
$152.00

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)?