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Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 50
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 7.2 - Problem 50

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# ?Wendy’s Drive-Through Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-through. Certainly, the fa

ISBN: 9780134133539 240

## Solution for problem 50 Chapter 7.2

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 50

Wendy’s Drive-Through 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?

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Step 1 of 5) Wendy’s Drive-Through 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

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Statistics: Informed Decisions Using Data : Inference about the Difference between Two Medians: Dependent Samples
?Secchi Disk A Secchi disk is an 8-inch-diameter weighted disk painted black and white and attached to a rope. The disk is lowered into water, and the

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?Wendy’s Drive-Through Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-through. Certainly, the fa