Practice Test

Question 1

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?

Revolt · Accepted Answer

C: 10 point 0  percent

Question 2

Consider the following sets. cap u is equal to all triangles cap e is equal to x divides x is in cap u and x is equilateral cap i is equal to x divides x is in cap u and x is isosceles cap s is equal to x divides x is in cap u and x is scalene cap A is equal to x divides x is in cap u and x is acute cap o is equal to x divides x is in cap u and x is obtuse cap r is equal to x divides x is in cap u and x is right Which is a subset of cap i ?

Revolt · Accepted Answer

B: cap e

Question 3

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Two marbles are drawn from the bag. Which expression represents the probability that one of the marbles is red and the other is blue?

Revolt · Accepted Answer

D: the fraction with numerator open paren sub 10 cap c sub 1 close paren times open paren sub 20 cap c sub 1 close paren and denominator sub 50 cap c sub 2

Question 4

A coach chooses six out of eight players to go to a skills workshop. If order does not matter, in how many ways can he choose the players for the workshop?

Revolt · Accepted Answer

C: 28

Question 5

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?

Revolt · Accepted Answer

B: cap p times open paren shower gel divides scented close paren is equal to 42 percent

Question 6

A farmer grows vegetables on seven acres, fruit on six acres, and flowers on two acres. Out in his fields, he finds a ladybug. To the nearest tenth of a percent, what is the theoretical probability that the ladybug was not found within the acres of flowers?

Revolt · Accepted Answer

D: 86 point 7 percent

Question 7

A number cube has faces numbered 1 to 6. What is true about rolling the number cube one time? Choose three correct answers.

Revolt · Accepted Answer

B: If  cap A  is a subset of  cap s ,  cap A  could be  start set 5 comma 6 end set .; C: cap s is equal to 1 comma 2 comma 3 comma 4 comma 5 comma 6; D: If a subset  cap A  represents the complement of rolling a  5 , then  cap A is equal to 1 comma 2 comma 3 comma 4 comma 6 .

Question 8

Miriam is visiting five friends in her neighborhood, Louise, Mike, Nicole, Oscar, and Pascal. In each arrangement, the first initial of each person’s name represents that person’s position as he or she is visited by Miriam. Which shows all the outcomes for this event if she visits with Nicole first and Louise last?

Revolt · Accepted Answer

C: NMOPL, NMPOL, NOPML, NOMPL, NPMOL, NPOML

Question 9

Nico owns 11 instructional piano books. Two are beginner books, six are intermediate books, and three are advanced books. If two books are randomly chosen from the collection, one at a time, and replaced after each pick, what is the probability that he first chooses an advanced book and then chooses a beginner book?

Revolt · Accepted Answer

B: 6 over 121

Question 10

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?

Revolt · Accepted Answer

C: 50 percent

Practice Test Answers

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