Developing and Using Probability Models

Use the spinner to find the probability.

P(not D) =

• 5

• 5/6

• 0.63

• 1/6

Use the spinner to find the probability.

P(2 or 3) =

• 1/4

• 3/8

• 2

• 2/4

Suppose there are 200 students in the cafeteria during lunch. How many students would you expect to choose pizza as their favorite cafeteria food?

• 90

• 104

• 18

• 72

Bailey tossed a coin 10 times. The results were 7 heads and 3 tails.

What is the experimental probability of tossing tails?

• 1/3

• 3/10

• 3/7

• 1/2

A sports bag contains 3 tennis balls, 4 baseballs, and 8 golf balls. Each is equally likely to be chosen. Which of the following models could be used to simulate this situation?

• flipping a coin fifteen times

• spinning a spinner with three equal sections

• choosing from 3 red marbles, 4 yellow marbles, and 8 blue marbles

• rolling a number cube labeled one through six fifteen times

A store is handing out coupons worth 10%, 15%, 20%, or 25% off. Each coupon is equally likely to be handed out. Which of the following models could be used to simulate this situation?

• flipping a coin four times

• spinning a spinner with four equal sections

• rolling a number cube labeled one through six one time

• rolling a number cube labeled one through six four times

What are the different possible outcomes for the spinner above?

• 1, 1, 2, 2, 2, 3, 3, 3

• 1, 2, 3

• 8

Which spinner has equally likely outcomes?

• 
• 
• 
• 

True or False: If you spin this spinner once, landing on one and landing on 2 have the same probability. 

• True:  There are 3 spaces for you to land on each of those numbers 
• False:  The space of 2 on the spinner is greater than the space for 1. 

If a dice is rolled 300 times, how many times would you predict a roll of a 1 or a 6?

• 50
• 100
• 150
• 75