An insurance company sells automobile liability and collision insurance. Let X denote the percentage of liability policies that will be renewed at the end of their terms and Y the percentage of collision policies that will be renewed at the end of their terms. X and Y have the joint cumulative distribution function F(x, y) = \dfrac{xy(x+y)}{2{,}000{,}000}, 0\le x\le 100, 0\le y \le 100. Calculate Var(X).

-764.28

Step-by-step explanation:

Given the joint cumulative distribution of X and Y as

#First find and probability distribution function ,:

#Have determined the probability distribution unction ,, we calculate the Expectation of the random variable X:

#We then calculate :

Hence, the Var(X) is 764.28  

answer: yes youre right.

step-by-step explanation:

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above