Question: 3 Consider a continuous random variable X with the density function (called the exponential density a Find and sketch the cdf for X. b Find

3 Consider a continuous random variable X with the density function (called the exponential density

-x F(x)= {* if x 0 otherwise

a Find and sketch the cdf for X.
b Find the mean and variance of X. (Hint: Use integration by parts.)

c Find image text in transcribed

-x F(x)= {* if x 0 otherwise

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