Name ____________________________

Unit 9 Review

1. How are random numbers used and generated?

2. Give two examples of random number generators.

3. Use a random number generator to give a list of 10 integers ranging from 1-50.

4. Create a histogram to show the data from question 3.

 Answer the questions as they relate to probability.

For rolling a two on the number cube:

5. List each favorable outcome.

6. Count the number of favorable outcomes.

7. Write the total number of outcomes.

Use the spinner to answer the questions below.

8. What is the probability of the spinner landing on three or four?

9. What is the probability of the spinner landing on blue?

Answer each question and write the probability as a fraction, a decimal, and a percent.

10. A clothes dryer contains 12 socks. What is the probability of reaching inside the dryer and pulling out a blue sock?

11. What is the probability of pulling a blue or white sock out of the dryer?

Use the table below to compute the experimental probability of the arrow in the spinner landing on yellow.

12. How many favorable outcomes were there in the experiment?

13. How many total outcomes were there in the experiment?

14. What is the experimental probability of the arrow landing on yellow?

15. Alex Rodriguez compiled this batting record shown over the first five months of the 6-month season. Based on A-Rod’s monthly home run total, predict the number of total home runs Rodriguez will have at the end of the month of September. [source for A-Rod: ESPN.com]

16. Suppose Rodriguez finishes the year with a total of 520 career home runs at the end of 2007. If he continues at his monthly pace from this year, during which year and what month do you predict that A-Rod will hit home run number 800? (Assume each baseball season has six months, April to September.)