6.23: Look at the pdf of Gamma given in the tables. Plug in alpha = 3 and see if you are getting the pdf as mentioned in the solution
6.24:
Recall:
(1) Independence implies covariance (and correlation) = 0
(2) Covariance (and correlation) = 0 does not imply independence at all times.
However, Covariance (and correlation) <> 0 does imply not independent
Last edited: May 15, 2014