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Find and interpret the mean of x

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Reference no: EM132850782

A company that rents DVDs from vending machines in grocery stores has developed the following probability distribution for the random variable X = the number of DVDs a customer rents per visit to a machine.

X 1 2 3 4

P(X) 0.5 0.3 0.1 0.1

a) Find and interpret (in a sentence) the mean (expected value) of x.

b) Find and interpret (in a sentence) the standard deviation of x.

c) What is the probability that a customer rents more than 2 DVDs per visit to a machine?

Reference no: EM132850782

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