Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-throughs. certainly, the faster the cars get through the drive-through, the more the opportunity for making money. qsr magazine studied drive-through times for fast-food restaurants and found wendy’s had the best time, with a mean time spent in the drive-through of 138.5 seconds. assuming drive-through times are normally distributed with a standard deviation of 29 seconds, answer the following.

(a) management wants to set a wait time over which a customer will not have to pay for their food. of course, management wants to set that wait time to the 99th percentile. find the x for the 99th percentile. (hint: 99% = 0.9900). round to the nearest whole second. sullivan, michael iii. fundamentals of statistics: #40 (ch 7.2). pearson education. kindle edition.