GSE Math 7 Unit 6 Probability Study Guide

GSE Math 7 Unit 6 – Probability Study Guide

Name: ______

Calculate the following probabilities given one spin on the spinner below (assuming the spinner is fair). Write each answer as a fraction.

1. P(the amount is greater than $200) =______$300 $600

P(the amount is at least $400)=______2. $500 $100

3. P($700)=______$800 $700 4. P($300)=______$200 $400

5. A bag of marbles contains 7 red, 12 orange, 3 blue, and 6 multi-colored marbles. What is the probability of randomly selecting a marble that is not red? ______

6. A bag of marbles contains 3 red, 14 blue, 2 white, and 1 yellow. What is probability of not selecting a red or white marble? ______

7. If you spin the spinner shown, what is the probability of spinning purple or yellow? ______

Purple Yellow

8. Three cards numbered 3, 6, and 9 are placed in a paper bag labeled “A”. Three cards numbered 4, 7, and 9 are placed in a paper bag labeled “B”. A card is randomly drawn from each bag. What is the probability that the first card is odd and the second card is odd? ______

9. Three cards numbered 3, 6, and 9 are placed in a paper bag labeled “A”. Three cards numbered 4, 7, and 9 are placed in a paper bag labeled “B”. A card is randomly drawn from each bag. What is the probability that first card drawn is even and the second card drawn is odd? ______For problems 10 and 11, there are 10 yellow, 6 green, 9 orange, and 5 red cards in a stack of cards turned facedown. Once a card is selected, it is replaced. Find each probability.

10. What is the probability that you will pull an orange card? ______11. What is p(pulling an orange card and pulling a red card)? ______

12. Morgan has 5 pencils that are colored red, blue, yellow, green and orange in her book bag. Last week, of the 20 times that she reached for a pencil, she grabbed the green pencil 4 times. How does the experimental probability of choosing a green pencil compare to the theoretical probability GSE Math 7 Unit 6 – Probability Study Guide

A. The experimental and theoretical probability is the same.

B. The experimental probability is less than the theoretical probability.

C. The experiment probability is greater than the theoretical probability.

D. Neither the experimental nor theoretical probability can be determined.

13. Robin has 4 pencils that are colored red, blue, yellow and orange in her book bag. What is the

theoretical probability of picking a blue pencil?

 ______(answer as a fraction)

 ______(answer as a decimal)

Using the playing cards shown below for problems 14 - 16, determine the probability of drawing the following cards. Write each answer as a fraction, decimal, and percent.

14. What is the probability of choosing a jack and a three? ______

15. What is the probability of choosing a queen or a five? ______

In a bag of M&M’s the distribution of colors is shown in the table below. Use the table to answer the question below.

Color Distribution Red 0.24 Yellow 10% Green 11% Blue 0.18 3 Orange 25 GSE Math 7 Unit 6 – Probability Study Guide

1 Brown 4

16. If a M&M color is selected at random, which color is most likely to be selected? ______