CD UNIT TEST REVIEW QUESTIONS WITH
ALL CORRECT & VERIFIED ANSWERS
A prize bag contains four country music CDs, eight pop music CDs, and five classic rock CDs.
What is the probability of pulling out a classic rock CD and then, without replacing it, pulling out a
country music CD? Express your answer in decimal form, rounded to the nearest hundredth.
Correct answer-0.07
Ariana, Boris, Cecile, and Diego are students in the service club. Three of the four students will be
chosen to attend a conference.
Which choice represents the sample space, S, for this event? Correct answer-S = {ABC, ABD, ACD,
BCD}
The manager of a grocery store reports that there is a 12 percent chance that a customer buys
apples during a shopping trip, a 5 percent chance that a customer buy apples and carrots, and a 17
percent chance that a customer buys apples or carrots.
What is the probability of a customer buying carrots? Correct answer-10.0 percent
A survey asked about the number of people who eat breakfast almost every day (B) and the number
of people who buy cereal at least once a month (C). The results of the survey are shown in the Venn
diagram.
Given that a randomly chosen person eats breakfast almost everyday, what is the probability that the
person also buys cereal at least once a month? Correct answer-53/64
Juanita has a storage closet at her shop with extra bottles of lotion and shower gel. Some are scented
and some are unscented. If she reaches into the closet and grabs a bottle without looking, she has a
42% chance of grabbing a bottle of shower gel.
For the events "shower gel" and "scented" to be independent, what must be shown to be true?
Correct answer-P(shower gel | scented) = 42%
Four girls and six boys are in a Spanish club. Three of the people will be chosen at random to
represent the group in a photograph.
What is the probability that one girl and two boys will be chosen? Correct answer-50%
The spinner is equally likely to land on any of the five sections.
What is the probability that the spinner lands on an even number or on the unshaded section?
Correct answer-3/5
A number cube has faces numbered 1 to 6.
What is true about rolling the number cube one time? Select three options.
S = {1, 2, 3, 4, 5, 6}
If A is a subset of S, A could be {0, 1, 2}.
If A is a subset of S, A could be {5, 6}.
If a subset A represents the complement of rolling a 5, then A = {1, 2, 3, 4, 6}.
ALL CORRECT & VERIFIED ANSWERS
A prize bag contains four country music CDs, eight pop music CDs, and five classic rock CDs.
What is the probability of pulling out a classic rock CD and then, without replacing it, pulling out a
country music CD? Express your answer in decimal form, rounded to the nearest hundredth.
Correct answer-0.07
Ariana, Boris, Cecile, and Diego are students in the service club. Three of the four students will be
chosen to attend a conference.
Which choice represents the sample space, S, for this event? Correct answer-S = {ABC, ABD, ACD,
BCD}
The manager of a grocery store reports that there is a 12 percent chance that a customer buys
apples during a shopping trip, a 5 percent chance that a customer buy apples and carrots, and a 17
percent chance that a customer buys apples or carrots.
What is the probability of a customer buying carrots? Correct answer-10.0 percent
A survey asked about the number of people who eat breakfast almost every day (B) and the number
of people who buy cereal at least once a month (C). The results of the survey are shown in the Venn
diagram.
Given that a randomly chosen person eats breakfast almost everyday, what is the probability that the
person also buys cereal at least once a month? Correct answer-53/64
Juanita has a storage closet at her shop with extra bottles of lotion and shower gel. Some are scented
and some are unscented. If she reaches into the closet and grabs a bottle without looking, she has a
42% chance of grabbing a bottle of shower gel.
For the events "shower gel" and "scented" to be independent, what must be shown to be true?
Correct answer-P(shower gel | scented) = 42%
Four girls and six boys are in a Spanish club. Three of the people will be chosen at random to
represent the group in a photograph.
What is the probability that one girl and two boys will be chosen? Correct answer-50%
The spinner is equally likely to land on any of the five sections.
What is the probability that the spinner lands on an even number or on the unshaded section?
Correct answer-3/5
A number cube has faces numbered 1 to 6.
What is true about rolling the number cube one time? Select three options.
S = {1, 2, 3, 4, 5, 6}
If A is a subset of S, A could be {0, 1, 2}.
If A is a subset of S, A could be {5, 6}.
If a subset A represents the complement of rolling a 5, then A = {1, 2, 3, 4, 6}.
