The time required for an automotive center to complete oil change service on an automobile approximately follows a normal? distribution with a mean of 19 minutes and a standard deviation of 3.6 minutes.
a) The automotive center guarantees customers that the service will take no longer than 20.5 minutes. If it does take? longer, the customer will receive the service for? half-price. What percent of customers receive the service for? half-price? (12 points)
b) If the automotive center does not want to give the discount to more than 9?% of their? customers, how long should it make the guaranteed time limit? Which percentile have you just found? (12 points)
ScholarMatic: Explanation & Answer
Your ready answer from a verified tutor is just a click away for as little as $14.99
Click Order Now to get 100% Original Answer Customized to your instructions!
