In: Statistics and Probability
Suppose that Y1 and Y2 are random variables with joint pdf given by f(y1,y2) = ky1y2 ; 0 < y1 <y2 <1,
where k is a constant equal to 8.
a) Find the conditional expected value and variance of Y1 given Y2=y2.
b) Are Y1 and Y2 independent? Justify your answer.
c) Find the covariance and correlation between Y1 and Y2.
d) Find the expected value and variance of Y1+Y2.