Question

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(D|B) = 0.5.
a. Find P(B′).
b. Find P(D AND B).
c. Find P(B|D).
d. Find P(D AND B′).
e. Find P(D|B′).

Answer 1

b find p(D AND B)

`0.30 + 0.40 = 0.70 \0.5 = 1.4`