The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 19 minutes and a standard deviation of 3...

Extracted text: The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 19 minutes and a standard deviation of 3 minutes. (a) The automotive center guarantees customers that the service will take no longer than 20 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? (b) If the automotive center does not want to give the discount to more than 3% of its customers, how long should it make the guaranteed time limit? Question Help v (a) The percent of customers that receive the service for half-price is %. (Round to two decimal places as needed.) (b) The guaranteed time limit is minutes. (Round up to the nearest integer as needed.) Enter your answer in each of the answer boxes. 1:20 PM P Type here to search AD4 d0E ENG 3/21/2021 DELL PgUp Delete PrtScr Insert F11 F12 F10 F9 F7 F8 F6 F4 F5 F2 F3 A Backspace Esc F1 & %3D $4 8 6.