# Let X be the number of years before a certain kind of pump needs replacement. Let X have the probability function f(x) = kx 3 , x = 0, 1, 2, ,3, 4. Find k. Sketch f and F.

Chapter 24, PROBLEM SET 24.5 #7

Let X be the number of years before a certain kind of pump needs replacement. Let X have the probability function f(x) = kx^{3}, x = 0, 1, 2, ,3, 4. Find k. Sketch f and F.

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