Chapter 9 Review
1. Give the probability of each outcome.
A quiz contains 5 true or false questions. Suppose
you guess randomly on every question. The table
below gives the probability of each score.
2. What is the probability of
guessing an even number of
questions correctly (not counting
zero)?
3. The table shows the results of 500 spins of a
spinner. Estimate the probability of the spinner
landing on 2.
4. The table shows the results of 500 spins of a
spinner. Estimate how many times a will land if
the wheel is spun 650 times.
An experiment consists of rolling one
fair die and flipping a coin.
5. What is the probability of
getting an even number and
heads? Show sample space.
Dice Page
Using 2 dice, what is the probability of
rolling:
6. 4 ?
7. 7 ?
8. 9?
9. What number comes up the most and
why?
10. Suppose you are playing a game in
which you roll two fair dice. If you roll
a total of five you will win. If you roll a
total of two, you will lose. If you roll
anything else, the game continues.
What is the probability that the game
will end on your next roll?
(Mutually Exclusive)
#11 – 13 use this same plate
combination! (Fundamental Counting
Principle)
License plates are being produced that
have a single letter followed by three
digits. All license plates are equally
likely.
11. Find the number of license plates
produced.
12. Find the probability that a license
plate has the letter Q.
13. Find the probability that a license
plate does not contain a 7.
14. Find the probability of being
assigned: Z539
15. A baker can make yellow or
white cakes with a choice of
chocolate, strawberry, or vanilla
icing. Describe all of the possible
combinations of cakes.
Determine if the events are
dependent or independent.
16. getting tails on a coin toss and
rolling a 6 on a number cube
17. getting 2 red gumballs out of a
gumball machine
Two boxes each contain 4
marbles: red, blue, green, and
black. One marble is chosen from
each box.
18. What is the probability of
choosing a blue marble and then
a red marble?
Two boxes each contain 4
marbles: red, blue, green, and
black. One marble is chosen from
each box.
19. What is the probability of
choosing at least one blue
marble?
The letters in the word baseball
are placed in a box. The letters
are not replaced.
20. If two letters are chosen at
random, what is the probability
that they will both be
consonants?
BASEBALL
21. If two letters are chosen at
random, what is the probability
that they will both be consonants
or both be vowels?
22. Independent
23. Dependent
24. Sample space
25. Mutually exclusive
26. Theoretical probability
27. Experimental probability
Chapter 9 Review Homework
Page 490 #1, 2, 4
Page 491 #5, 6, 8
Page 500 #13, 14
Answers found on page 809
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Page 469 #1, 3, 6
Answer 1) 1,757,600 3) 0.81
6)chix-cheese, chix-ham, chix-turkey
bean-cheese, bean-ham, bean-turkey
veggie-cheese, veggie-ham, veggie-turkey (9 combos)