Quiz #3 (Chapter 14 Vocab)

Question 1

General Addition Rule

Answer 1

For any two events, A and B, the probability of A or B is
P(A∪B) =P(A) +P(B) -P(A∩B)

Question 2

Conditional Probability

Answer 2

P(B|A) = [P(A∩B)]/[P(A)]; P(B|A) is read “the probability of B given A.”

Question 3

Independence (used formally)

Answer 3

Events A and B are independent when P(B|A) = P(B).

Question 4

General Multiplication Rule

Answer 4

For any two events, A and B, the probability of A and B is
P(A∩B)= P(A) x P(B|A)

Question 5

Tree Diagram

Answer 5

A display of conditional events or probabilities that is helpful in thinking through conditioning.