The amount of time that a custome spends waiting at an

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Reference no: EM13621414

The amount of time that a custome spends waiting at an airport check-in counter is a random variable with mean 8.3 minutes and a standard deviation 1.5 minutes. Suppose that a random of n=49 customers is observed. Find the probability that the average time waiting in line for these customers in

a. Less than 10 minutes

b. Between 5 and 10 minutes.

Reference no: EM13621414

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