Exercise 8. (10 points) Show that if X1N(1,12) and X2N(2,22) are independent random
variables, then the random variable Y=X1X2 is also normally distributed with E(Y)=12 and
Var[Y]=12+22..
Exercise 8. (10 points) Show that if X1N(1,12) and X2N(2,22) are inde.pdf
1. Exercise 8. (10 points) Show that if X1N(1,12) and X2N(2,22) are independent random
variables, then the random variable Y=X1X2 is also normally distributed with E(Y)=12 and
Var[Y]=12+22.