Two random variables X and Y have a joint probability density function given by fXY(x, y) = Kxy, 0 < x < 2, 0 < y < 2, and 0 otherwise, then EDXY] = O a. 1.67 O b. 1.47 O c. 1.57 O d. 1.77 Question 12 A telephone call occurs at random between 9:00 a.m. and 11:00 a.m. Thus, the probability that the call occurs between 9:30 a.m. and 10:45 a.m. is Not yet answered O a. 5/11 O b. 7/8 O c. 5/8 Marked out of 2.00 P Flag question O d. 9/11