Mathematics, 24.02.2020 19:03 hey2000

Suppose that the length of time required to run a maintenance check and to service an automobile has a mean value of 2 hours and standard deviation of 0.6 hour. Suppose also the mechanic plans to service 21 automobiles in a week (5 days, 8 hours per day), what is the probability that he will not finish the task?

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