Thank you for the help.

{l- The lime required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution. with a mean of 15 minutes and a standard deviation of 3 minutes. [a] The automotive center guarantees customers that the service will take no longerthan 2!] minutes. if it does take longer, the customer will receive the service for halfprice. 1What percent of customers receive the service for haltprice? [b] If the automotive center does not want to give the discount to more than 2% of its customers, how long should it make the guaranteed time limit? Click here to view the standard normal distribution table [page 1} Click here to view the standard normal distribution table (age2} [a] The percent of customers that receive the service for half-price is 'l'E. (Round to two decimal places as needed.) [b] The guaranteed time limit is :l minutes. (Round up to the nearest minute.) \fFind the Z-scores that separate the middle 34% of the distribution from the area in the tails of the standard normal distribution. Click the icon to view a table of areas under the normal curve. The Z-scores are (Use a comma to separate answers as needed. Round to two decimal places as needed.)