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on average 3.5 shoplifting incidents occur per week at an electronic store.Find the following probabilities. a)...

on average 3.5 shoplifting incidents occur per week at an electronic store.Find the following probabilities.
a) At least two incidents will occur during a given week.
b) What are the mean and standard deviation of the distribution?
c) At most two incidents will occur during a given day.

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