Download Simple Events Probability Review

Name: ___________________________________ Date: ___________________ Period: _____________
Simple Events Probability Review
For problems 1-4, use the spinner shown. Determine the
probability of each event. Write as a fraction in simplest form.
1.P(even number)
2.P(1,2,3, 4, or 5)
3.P(not 4)
4. P(10)
5. A bag contains 6 blue, 5 red, and 6 green marbles. A marble is selected at random. Determine
the probability the marble is green and the probability that the marble is not green. Also, what
kind of event is this?
For problems 6-8, Danny rolled a number cube 40 times. He rolled the number 6 a total of 18 times.
6. What is the experimental probability that Danny rolled a 6? Express in simplest form.
7. What is the theoretical probability that Danny rolled a 6? Express in simplest form.
8. What is the difference between the experimental and theoretical probabilities of Danny rolling a 6?
Name: ___________________________________ Date: ___________________ Period: _____________
9. What is the theoretical probability of rolling an odd number on a die? Express in simplest form.
10. Denny’s has a breakfast plate special that lets you pick wheat or white toast, bacon or sausage,
scrambled eggs or over easy. What is the probability that a customer will pick wheat toast, bacon, and
scrambled eggs? How many possible outcomes are there?
11. The table shows the results of a survey asking girls what color bow they had on that day. A girl from
the survey is chosen at random. What is the experimental probability that the girl has a green bow?
Express in simplest form.
Bow Color
Pink
Purple
Green
Blue
Number of Bows
5
10
12
3
12. The probability that it will be windy tomorrow is 40%. What is the probability that it will not
be windy? Express this number as a fraction not a percent.
13. Casey rolls a numbered cube. What is the theoretical probability that he will land on a 2 or 5?
14. Ms. Binford surveyed her class and found that 30% of her students have a cell phone.
Identify the complement of this event and the probability.
Name: ___________________________________ Date: ___________________ Period: _____________
15. Draw a tree diagram of flipping a quarter and then tossing a dime. Then list out all the
possible outcomes of the sample space, and tell how many outcomes there are.
The spinner shown is spun once. Determine the probability of each event. Express it as a
fraction, decimal, and a percent. How likely is each event? (impossible, unlikely, as likely to
happen as not, likely, or certain?
16. P(Blue)
17. P(Not Red)
18. P(not brown)
19. P(Pink)
Name: ___________________________________ Date: ___________________ Period: _____________
20. Theoretically, how many times will the spinner land on the number 3 if it is spun 48 times?
21. Write a list showing all the different snow cone combinations when you choose one type of flavor and
one size from the table below?
Snow Cone Flavors
Strawberry
Bubblegum
Grape
Size
Small
Medium
22. The table shows the number of bottles of nail polish in a bag. How many times would you expect to
select purple nail polish if you picked a bottle of nail polish from the bag 180 times and replaced it each
time?