AP Statistics Probability

What is the definition of mutually exclusive events in probability?

• Events that cannot occur at the same time

• Events that have no relation to each other

• Events that are completely random

• Events that always occur together

A box has 3 lime, 5 grape, and 2 orange popsicles.

P(NOT lime) =

• 7/10

• 1/2

• 3/10

• 4/10

What is the complement of choosing a red marble if there are 8 red marbles in a jar of 15?

• P' = 3/15

• P' = 7/15

• P' = 8/15

• P' = 15/8

What is the formula for conditional probability?

• P(A|B) = P(A) / P(B)

• P(A|B) = P(A) + P(B)

• P(A|B) = P(A) * P(B)

• P(A|B) = P(A ∩ B) / P(B)

What is the probability the dessert has peanut butter in it?

• 0.84

• 0.58

• 0.22

• 0.59

What is the probability that a randomly selected student plays sports given that they do not do community service?

What is the probability that a student plays sports given that they do community service?

If P(A) = 0.6 and P(B) = 0.5, what is P(A and B) if A and B are independent events?

• 0.1

• 1.1

• 0.9

• 0.3

If P(A) = 0.4 and P(B) = 0.3, what is P(A or B) using the general addition rule?

• 0.7

• 1.0

• 0.5

• 0.2

In an AP Statistics class, 57% of students eat breakfast in the morning, 80% of them floss their teeth, and 46% of the students do both.  What is the probability that a randomly chosen student eats breakfast but does not floss their teeth?

• 9%

• 11%

• 34%

• 91%