San Diego State University Operations And Supply Chain Management Assignment Help - Mean

Question - The sick-leave time of employees in a firm in a month is normally distributed with a mean of 100 hours
and a standard deviation of 20 hours.
(a) What is the probability that the sick-leave time for next month will be between 50 and 80 hours?
(b) How much time should be budgeted for sick leave if the budgeted amount should be exceeded
with a probability of only 10%?

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