# Question

The probability distribution of the weekly demand for copier paper (in hundreds of reams) used in the duplicating center of a corporation is provided in the file S04_58.xlsx.
a. Find the mean and standard deviation of this distribution.
b. Find the probability that weekly copier paper demand is at least one standard deviation above the mean.
c. Find the probability that weekly copier paper demand is within one standard deviation of the mean.

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