40. Wendy's Drive-Through 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

Question

(d) Would it be unusual for a car to spend more than 3 minutes in Wendy's drive-through? Why?

40. Wendy's Drive-Through 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
Expand
Transcribed Image Text

40. Wendy's Drive-Through 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

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