X and Y are two independent continuous random variables with variances 10 and 5 respectively. Another random variable Z is defined as Z=(X+Y-5). If the mean values of X and Y are 1 and 2 respectively, then the variance of Z will be_____.15

X and Y are two independent continuous random variables with variances

1.	X and Y are two independent continuous random variables with variances 10 and 5 respectively. Another random variable Z is defined as Z=(X+Y-5). If the mean values of X and Y are 1 and 2 respectively, then the variance of Z will be_____.15
Answer» X and Y are two independent continuous random variables with variances 10 and 5 respectively. Another random variable Z is defined as Z=(X+Y-5). If the mean values of X and Y are 1 and 2 respectively, then the variance of Z will be_____. 15