# Question: Fast food restaurants spend quite a bit of time studying the

Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-through. 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 a car spent in the drive-through equal to 138.5 seconds. Assume that drive-through times are normally distributed, with a standard deviation of 29 seconds.

Suppose that Wendy’s wants to institute a policy at its restaurants that it will not charge any patron that must wait more than a certain amount of time for an order. Management does not want to give away free meals to more than 1% of the patrons. What time would you recommend Wendy’s advertise as the maximum wait time before a free meal is awarded?

Suppose that Wendy’s wants to institute a policy at its restaurants that it will not charge any patron that must wait more than a certain amount of time for an order. Management does not want to give away free meals to more than 1% of the patrons. What time would you recommend Wendy’s advertise as the maximum wait time before a free meal is awarded?

## Answer to relevant Questions

The time required for Speedy Lube to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 17 minutes and a standard deviation of 2.5 minutes. (a) Speedy Lube guarantees ...A random sample of O-rings was obtained, and the wall thickness (in inches) of each was recorded. Use a normal probability plot to assess whether the sample data could have come from a population that is normally ...The probability of no more than 20 people who want to see Roe v. Wade overturned A discrete random variable is given. Assume the probability of the random variable will be approximated using the normal distribution. Describe ...The probability that fewer than 35 people support theprivatization of Social Security A discrete random variable is given. Assume the probability of the random variable will be approximated using the normal distribution. ...In a recent poll, the Gallup Organization found that 45% of adult Americans believe that the overall state of moral values in the United States is poor. Suppose a survey of a random sample of 500 adult Americans is conducted ...Post your question