What is the probability that the average wait time

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At a cellular store, 40 customers were randomly chosen to see how long it took for them to wait in line. The average wait time was 24 minutes with a standard deviation of 4.9 minutes.
~ Answer

N(24, 4.9)P(24)N(24, 0.775)P(24, 4.9)

What is the probability that the average wait time for 40 customers is more than 25 minutes? Round your answer to 3 decimal places (i.e. 0.123)? Answer

There is a 20% chance the average wait time for 40 customers is less than how many minutes? Round your answer to 3 decimal places (i.e. 1.123)? Answer

What is the probability that the average wait time for 40 customers is between 22 and 23.5 minutes? Round your answer to 3 decimal places (i.e. 0.123)? Answer

Reference no: EM132849315

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