Question: In Exercises the random variable n represents the number of units of a product sold per day in a store. The probability distribution of n

In Exercises the random variable n represents the number of units of a product sold per day in a store. The probability distribution of n is given by P(n). Find the probability that two units are sold in a given day [P(2)] and show that P(0) + P(1) + P(2) + P(3) + · · · = 1.

P(n) = 1/()* 22.

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