7,8 how to solve it

-. Let X be the amount of time (in hours) the wait is to get a tabie at a restaurant. Suppose the Cdf is represented by 0 x2 Use the cdf to determine E[X]. a) Q 1.50 b) O 1.33 c) O 1.00 d) O 3.00 e) O 2.67 f) 0 None of the above Review Later it Question 8 Let X be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf is represented by 0 x 2 ' Use the cdf to determine ox. a) 0 0.1500 b) 0 0.9487