1) A student goes to the library. Let events B = the student checks out a book and D = the student checks out a DVD. Suppose that P(B) = 0.40, P(D) = 0.30 and P(B AND D) = 0.20.Is it true or false that B and D are independent?

a) True

b) False

2) A student goes to the library. Let events B = the student checks out a book and D = the student checks out a DVD. Suppose that P(B) = 0.62, P(D) = 0.6 and P(B AND D) = 0.49. Find P(D|B). Give your answer as a decimal rounded to the nearest hundredth.