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A random variable X has pdf as follows: ?(?) = ?? + .2 0 < ?...

A random variable X has pdf as follows: ?(?) = ?? + .2 0 < ? <5. PAY ATTENTION TO > and < signs!

a. Find constant c so that f(x) becomes legitimate pdf.

b. What is the mean of X?

c. What is the 60th percentile of X?

Math   Statistics-And-Probability   
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