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Back to 3.2 Independent and Mutually Exclusive Events

3.2 Exercise 13

Avg difficulty 2.5

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) = .40, P(D) = .30 and P(B AND D) = .20.

  1. Find P(B|D).
  2. Find P(D|B).
  3. Are B and D independent?
  4. Are B and D mutually exclusive?

OpenStax Statistics, 3.2 Independent and Mutually Exclusive Events, exercise 13

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