5.3 The manager of a large computer network has developed

the following probability distribution of the number of
interruptions per day:
Interruptions (X) P1X2
0 0.32
1 0.35
2 0.18
3 0.08
4 0.04
5 0.02
6 0.01
a. Compute the expected number of interruptions per day.
b. Compute the standard deviation.
Need step by step directions to do this in 2010 Excel spreadsheet.

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