Question 1 of 25 Company A charges a $125 annual fee plus $7 per hour car share fee.

Company B charges $110 plus $10 per hour. What is the minimum number of

hours that a car share needs to be used per year to make company A a better

deal?

O A. 6

O B.9

O C. 11

O D. 5

The discrete random variables x and y take integer values with joint probability distribution given by f (x, y) = a(y−x+1) 0 ≤ x ≤ y ≤ 2 or =0 otherwise, where a is a constant. 1 tabulate the distribution and show that a = 0.1.2 find the marginal distributions of x and y. 3 calculate cov(x, y).4 state, giving a reason, whether x and y are independent. 5 calculate e(y|x = 1).