Function is a probability density function

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Determine the value of c so that the following function is a probability density function:

f(x) = c/(x + 1)3 for x≥0.

Suppose a random variable X satises E[X] = 32 and Var(X) = 16. What can be said about P(20 < X < 44)?

Reference no: EM132522657

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