AP Probability and Statistics

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

At Daniel's Dicey Diner, the lunch buffet costs $12.00. On the third Tuesday of each month, Daniel sponsors the 'lucky buffet' lunch event. Each person can pay the $12.00, or roll two number cubes and pay the product of the 2 numbers showing face up on the number cubes. The given table provides the sample space of each event. Mr. Henry thinks he can easily win this game. Find the probability that he will pay more than the regular price for lunch.

• 13/36

• 23/36

• 19/36

• 16/36

• Correct answer not given!

The likelihood of an event happening.

• probability

• sample space

• complement

• experimental probability

The probability of an event NOT happening.

• probability

• complement

• experimental probability

• sample space

If two events A and B are mutually exclusive, the probability that they both occur at the same time is

• 1

• 0

• 0.5

• impossible to determine

Choose an American household at random. What is the probability that a household will have at least 3 cars?

• 0.20

• 0.07

• 0.13

• 0.80

Use the following table to find the probability.

P( X < $100)

• 1.00

• 0.10

• 0.60

• 0.90

Is the table a valid probability model?

• Yes.

• No, all the probabilities are not 0-1 inclusive but the sum is equal to 1.0

• No, all the probabilities are 0-1 inclusive but the sum is more than 1.0

• No, all the probabilities are not 0-1 inclusive and the sum is more than 1.0

The table show goals made by a soccer team along with the probability of each number occurring during a game. What is the probability that the team scores 3 or 4 goals?

• 0.11

• 0.46

• 0.13

• 0.31

What is the complementary rule of probability?

• P(A)

• P(A|B)

• P(A)

• P(A and B)