(From Section 7.1, Exercises 2 and 6)

For the following joint distributions, find the covariance of X and Y using the direct method,

If the covariance is zero, are the random variables independent?

Transcribed Image Text:

1 0.45 0.25 Y=3 0.05 0.25 Cov(X, Y)=E[ (X-X)(Y-Y)]