PA Chapter 7 Review

At soccer practice your team scores 25/30 penalty shots. Use experimental probability to predict the number of penalty kicks your team would make out of 12 attempts. (Remember your answer for this problem.)

In a game (against opponents who don't understand the rules), your team has 12 opportunities to shoot penalty kicks, and they make 2 of them. Describe how this compares to your prediction in the last question, and give two possible explanations for the discrepancy.

A box contains 50 books. Some books are Historical Fiction, some are Fantasy, and the rest are Non-Fiction. The probability that you will randomly select a Fantasy book is 60%. How many Fantasy books are there in the box?

You flip two coins. Make a tree diagram. Then write a sample space. When you are finished, type "finished" for your response. (Don't erase your work. You need it for the next question.)

Look at your sample space. Circle each outcome that has at least one tails. What is the probability you will flip at least 1 tails? Write your answer as a simplified fraction.

Find P(≤8). Write your answer as a percent.

Find P(4). Write your answer as a simplified fraction.

If you spin the spinner 80 times, how many times would you expect it to stop on a number greater than 7. (Remember your answer to this question.)

You actually do spin the spinner 80 times and it lands on "a number greater than 7" 27 times. Is this reasonable or unreasonable. Explain.

What is the probability of rolling an even number on a die?

• impossible

• unlikely

• equally likely to happen or not happen

• likely