4-57. The sick-leave time of employees in a firm in a month is normally distributed with
Chapter 4, Problem 4-57(choose chapter or problem)
4-57. 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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