Bob Evan's wants to determine the average time to prepare meals for its customers. The managers...
Bob Evan's wants to determine the average time to prepare meals for its customers. The managers select a random sample of 50 customers and finds that the average time to prepare the meal is 18 minutes with a standard deviation of 8 minutes.
a) What is the probability that a meal will take more than 15 minutes to prepare?
b) What is the probability that a meal will take between 19 and 20 minutes to prepare?
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Bob Evan's wants to determine the average time to prepare meals
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