A student goes to the library. Let events B = the student checks out a book and D = the student check out a DVD. Suppose that P ( B) = 0.50. P (D) = 0.45 and P (D B) = 0.55. a. Find P (not B). Enter the exact answer without rounding. P(not B) = Number b. Find P (D AND B). Enter the exact answer without rounding. P(D AND B) = Number C. Find P (B|D). Round your answer to three decimal places. P(B D) = Number