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The number of pizzas delivered to university students each month is a random variable with the following probability distribution. x 0 1 2 3 P

The number of pizzas delivered to university students each month is a random variable with the following probability distribution.

x 0 1 2 3

P(x)

.1

.3

.4

.2

What is the expected number of pizzas delivered to university students each month?

What is the standard deviation of the number of pizzas delivered to university students each month?

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