Basics of Probability

What is the probability the spinner stops on yellow?

• 0.75

• 0.5

• 0.35

• 0.2

The letters that form the word ALGEBRA are placed in a bowl. One letter is chosen at random. Event A is the event of choosing an "A". Find P(A^C).

• 2/7

• 5/49

• 5/7

• 2/9

The list shows all possible outcomes for which experiment?

• Flipping a coin one time

• Flipping a coin two times

• Flipping a coin three times

• Flipping a coin four times

Three coins are tossed. Use the Sample Space provided. What's the probability of landing on the same side on all 3 coins? (Remember to simplify your answer).

• 1/12

• 2/8

• 6/8

• 1/3

Which of the following shows how to determine P(shaded number or number less than five)?

• 4/8 + 4/8 - 2/8

• 4/9 + 2/8 - 4/8

• 4/8 + 6/8 + 2/8

• 2/8 + 4/8 - 4/8

What is the probability of rolling doubles when you roll two dice?

• 6/36

• 6/10

• 2/12

• 1/36

Which of the following will correctly complete the following statement. Probability, when written as a fraction, will . . .

• never be equal to zero

• sometimes be greater than 1

• always be from 0 to 1

• will never be equal to 1

A number that indicates the likelihood of an outcome happening is the definition of ___.

• outcome

• probability

• sample space

• experiment

A die is rolled. What is the probability of rolling a 1 or a number greater than 3? (Reduce the fraction!)

• 2/3

• 1/2

• 5/6

• 1

What is the probability that a student plays an instrument?

• 11/20 = .55

• 10/20 = .5

• 9/20 = .45

• 8/20 = .4