Thread: Probability Density Function

Suppose that a random variable Y has a probability density function given by

f(y) = {6y(1-y), 0 <= y <= 1 AND 0 elsewhere}

a)Find F(y)
b)Graph F(y) and f(y)
c)Find P(.5<=Y<=.8)

Thanks for any help!!

Originally Posted by jzellt

Suppose that a random variable Y has a probability density function given by

f(y) = {6y(1-y), 0 <= y <= 1 AND 0 elsewhere}

a)Find F(y)
b)Graph F(y) and f(y)
c)Find P(.5<=Y<=.8)

Thanks for any help!!

Let's start with a).



where:



Now what exactly is the problem you are having with this?

CB

This is a by the way.

That's why the is your coefficient.