Question

The probability function for the number of insurance policies John will sell to a customer is given by
f(x) = .5 -(x/6) for x= 0, 1, or 2
a. Is this a valid probability function? Explain your answer.
b. What is the probability that John will sell exactly 2 policies to a customer?
c. What is the probability that John will sell at least 2 policies to a customer?
d. What is the expected number of policies John will sell?
e. What is the variance of the number of policies John will sell?

Answer

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