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Review Packet
Earl recorded the favorite subject of students in his class. Use the results of
his survey to answer questions 1 – 3 and give all answers as a fraction in
lowest terms.
1.
2.
3.
What is the experimental probability the
next student he surveys will respond “ELA”?
What is the experimental probability the
next student he surveys will respond
“Math” or “ELA”?
Subject
Number
of Students
Math
15
ELA
6
S.S.
5
Science
4
What is the experimental probability the next student he surveys will not
respond “S.S.”?
4. Jack can choose between 4 ties and 5 shirts. How many different outcomes
are in the sample space?
5. Jenna made a 3-digit password. How many possible passwords can she
choose from?
6. Tracy made a two-digit code. Neither of the digits are the same. How many
possible codes can he choose from?
7. Kima rolls a number cube that has sides labeled 1 to 6 and flips a coin.
A.
Write the list of possible outcomes.
B.
What is the probability (as a simplified fraction) that she rolls an odd
number and flips tails?
8. Lindsay rolls two number cubes, each with sides that are labeled 1 to 6. What
is the probability (as a simplified fraction) that both number cubes show a 5?
9. What is the probability (as a simplified fraction) of flipping a coin twice and
landing on tails both times?
10. Ann rolls 2 number cubes with sides labeled 1 to 6. What is the probability (as
a simplified fraction) that the sum of the numbers is less than or equal to 4?
11. Andy rolls 2 number cubes with sides labeled 1 to 6. What is the probability
(as a simplified fraction) that the sum of the numbers is exactly 4?
12. The probability that any box in a shipment will be damaged is 3%. If there are 640
boxes in a shipment, about how many of them will be expected to be damaged?
13.
The experimental probability that Maeby will hit a shot is
4
. If she takes 90
9
shots, how many shots can she expect to hit?
14. Catalina recorded the gender and entertainment preference of random
students in her school.
Catalina’s Survey Results
Entertainment
Books Movies
Gender
15.
Boy
40
60
Girl
70
30
A.
What is the experimental probability that the next student she
surveys will be a boy who prefers books? Give answer as a percent.
B.
What is the experimental probability that the next student she surveys
will not be a girl who prefers movies? Give answer as a percent.
Bodie’s Simulation Results
Trial
Numbers
Numbers
Trial
Generated
Generated
1
4, 4, 2, 5
6
4, 5, 5, 5
2
2, 4, 2, 5
7
3, 1, 3, 2
3
1, 3, 4, 5
8
4, 5, 2, 2
4
2, 5, 1, 1
9
4, 4, 5, 2
5
3, 4, 2, 3
10
2, 3, 1, 4
Bodie used a simulation to predict the
number of days of rain in his town.
A number 1 indicates a day in which it rained.
Numbers 2, 3, 4, or 5 indicate a day in which
it did not rain. The results of the simulation
are shown. What is the experimental
probability (as a simplified fraction) that it will
rain in Bodie’s town in at least 1 of the next 4
days?
Randy recorded the favorite movie genre of students in his class. Use the
results of his survey to answer questions 16 – 19 and give all answers as a
fraction in lowest terms.
16.
17.
What is the experimental probability the
next student he surveys will respond
“Drama”?
What is the experimental probability the
next student he surveys will respond
“Comedy” or “Action”?
Genre
Number
of Students
Comedy
25
Drama
20
Action
5
Horror
10
18.
What is the experimental probability the next student he surveys will not
respond “Horror”?
19.
What is the experimental probability the next student he surveys will
respond “Romance”?
20.
Liz can choose between 3 pairs of shorts and 6 t-shirts. How many different
outcomes are in the sample space?
21.
Leslie made a password that consists of 4 digits. None of the digits are the
same. How many possible passwords did Leslie choose from?
22.
Ron made a code that consists of 3 digits. The first digit is odd, the second
digit is even and the third digit can be anything. How many possible codes
did Ron choose from?
23. Jimmy rolls a number cube that has sides labeled 1 to 6 and spins a spinner
with 3 equal sections colored red, yellow and blue.
A.
Write the list of possible outcomes.
B.
What is the probability (as a simplified fraction) that he rolls an even
number and lands in the blue section of the spinner?
24. Michael rolls two number cubes, each with sides that are labeled 1 to 6. What
is the probability (as a simplified fraction) that both number cubes show an
even number?
25. What is the probability (as a simplified fraction) of flipping a coin four times and
landing on tails every time?
26. Donna rolls 2 number cubes with sides labeled 1 to 6. What is the probability (as
a simplified fraction) that the sum of the numbers is greater than or equal to 9?
27. Tom rolls 2 number cubes with sides labeled 1 to 6. What is the probability (as
a simplified fraction) that the sum of the numbers is exactly 7?
28.
The probability of winning a contest is 6%. If 480 people enter the contest,
about how many of them can be expected to win?
29.
The experimental probability that Tobias will get a hit is
1
. The
3
2
. If they each have
5
300 at-bats, how many more hits can Buster be expected to have?
experimental probability that Buster will get a hit is
30. Joy recorded the gender and handedness of people walking in a shopping mall.
Joy’s Survey Results
Hand
Left
Right
Male
17
91
Female
24
139
Gender
A.
What is the experimental probability that a person walking in the shopping
mall is a right handed female? Round answer to the nearest percent.
B.
What is the experimental probability that a person walking in the shopping mall is
not a right handed male? Round answer to the nearest percent.
31.
Omar’s Simulation Results
Trial
Numbers
Numbers
Trial
Generated
Generated
1
4, 3, 2, 1
6
5, 5, 4, 5
2
3, 3, 5, 5
7
3, 1, 2, 5
3
4, 4, 4, 5
8
1, 3, 2, 3
4
2, 3, 5, 5
9
4, 5, 5, 4
5
4, 5, 4, 5
10
1, 3, 2, 2
Omar used a simulation to predict the
number of days it will reach 90°F in his town.
A number 1, 2, or 3 indicates a day in which
it reaches 90°F. Numbers 4 or 5 indicate a
day in which it does not reach 90°F. The
results of the simulation are shown. What is
the experimental probability (as a simplified
fraction) that it will reach 90°F in Omar’s
town in at least 1 of the next 4 days?