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suppose a random variable X has a pdf given by fx(x)={k(x^2(1-x)), 0
suppose a random variable X has a pdf given by
fx(x)={k(x^2(1-x)), 0<=x<=1
{ 0, otherwise
a). find the value of k that makes this a valid pdf
b). find the cdf of X
c). find Fx(0.2)
d). find E[X]
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