Basic Probability Concepts

What is the range of possible probability values?

• 0 to 10

• -1 to 1

• 0 to 1

• Any real number

What is the formula for calculating probability?

• Favorable outcomes × total outcomes

• Favorable outcomes ÷ total outcomes

• Total outcomes ÷ favorable outcomes

• Favorable outcomes - total outcomes

What is a sample space?

• A single possible outcome

• The probability of an event occurring

• The number of successful outcomes

• The total set of all possible outcomes

If the probability of event A occurring is 0.75, what is the probability that it does NOT occur?

• 0.25

• 0.75

• 1.50

• 1.75

A six-sided die is rolled. What is the probability of rolling an even number?

• 1/6

• 1/2

• 2/3

• 5/6

A jar has 5 red, 3 blue, and 2 green marbles. What is P(blue)?

• 1/5

• 3/10

• 1/2

• 4/5

A deck has 52 cards. What is P(not drawing an Ace)?

• 1/13

• 4/52

• 6/13

• 12/13

A coin is flipped 200 times, landing on heads 84 times. What is the relative frequency of heads?

• 0.42

• 0.50

• 0.85

• 1.00

Two fair six-sided dice are rolled. What is the probability that the sum of their numbers equals 8?

• 5/36

• 6/36

• 8/36

• 11/36

A spinner has 4 equal sections: A, B, C, and D. What is P(not spinning A)?

• 1/4

• 2/4

• 3/4

• 4/4