Mathematics, 16.03.2020 21:05 jhausenfleck541

The probability model below describes the number of repair calls that an appliance repair shop may receive during an hour. Complete parts a and b below.

Repair Calls 1 2 3 4
Probability 0.1 0.5 0.3 0.1

a. How many calls should the shop expect per hour?
b. What is the standard deviation?

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The probability model below describes the number of repair calls that an appliance repair shop may r...