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1. The number of units, x, needed of an item is discrete from 1 to 5....

1. The number of units, x, needed of an item is discrete from 1 to 5. The probability, p(x), is directly proportional to the number of units needed. The constant of proportionality is K.
a. Determine the pmf of x
b. Find the probability that x is an even value
c. Compute the mean and variance of the random variable

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