Q webassign.net CHECK Score Given independent random variables X and Y with mean and standard deviations as shown, rMean St. Dev. | 5 1 |7 -5 3 Find the mean and the standard deviation for each of the following variables: The mean of 3X is: E15 y and the standard deviation of 3X is: E3 y The mean of Y+6 is: E\" q and the standard deviation of Y+6 is' The mean of X+Y is: IEIO ./ and the standard deviation of X+Y is:- El x (Round answer to four places after the decimal.) The mean of X-Y is: 7 _1O _ q and the standard deviation of X-Y is:- 8 X (Round answer to four places after the decimal.) The mean of 3X-ZY is: Ea and the standard deviation of 3X-ZY is:- E 3' (Round answer to four places after the decimal.) Submit Answer Submit Assignment Save Assignment Progress