AnswersGeometry Concepts and ConnectionsProbability and Statistics

Practice Test Answers

10 verified answers
1
Free Preview

Which statement must be true?

A
Out of the 125 children who do not have any siblings, 34 of them have a pet.
B
Out of the 97 children who have 1 pet, 40 of them do not have any siblings.
C
Out of the 97 children who have 1 sibling, 40 of them do not have a pet.
D
Out of the 125 children who do not have a pet, 18 of them have 2 siblings.
2
Free Preview

If k is in the intersection of cap A and cap b , which is the most specific location of k on the Venn diagram?

A
III
B
II
C
IV
D
cap i
3

Out of all 252 twelfth graders, how many rode in a car to school?

A
74
B
114
C
11
D
111
4

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 ?

A
cap r
B
cap s
C
cap e
D
cap A
5

Events X and Y are independent. The probability of X occurring is 1 third The probability of Y occurring is 1 half What is cap p times open paren cap x And cap y close paren ?

A
1 sixth
B
1 third
C
2 thirds
D
5 sixths
6

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

A
cap s is equal to 1 comma 2 comma 3 comma 4 comma 5 comma 6
B
If cap A is a subset of cap s , cap A could be start set 5 comma 6 end set .
C
If a subset cap A represents the complement of rolling an even number, then cap A is equal to 1 comma 3 .
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 .
E
If cap A is a subset of cap s , cap A could be start set 0 comma 1 comma 2 end set .
7

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 percent 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?

A
cap p times open paren shower gel divides scented close paren is equal to 42 percent
B
cap p times lotion is equal to 42 percent
C
cap p times open paren scented divides shower gel close paren is equal to 42 percent
D
cap p times scented is equal to 42 percent
8

Hana has a bag containing one red (R), one blue (B), and one yellow (Y) tile. She draws two tiles out of the bag, one after the other. Which explanation and tree diagram represent a pair of dependent of events?

A
Once a tile is chosen, it cannot be chosen again: Image with description A tree diagram showing three draws from a bag. The first level branches into three options, R, B, and Y. From R, the second level branches into B and Y. From B, the second level branches into R and Y. From Y, the second level branches into R and B. Each second-level branch excludes the tile already drawn at the first level.
B
Once a tile is chosen, it can be chosen again: Image with description A tree diagram showing three draws from a bag. The first level branches into three options, R, B, and Y. From R, the second level branches into R, B and Y. From B, the second level branches into R, B and Y. From Y, the second level branches into R, B and Y.
C
Once a tile is chosen, it can be chosen again: Image with description A tree diagram showing three draws from a bag. The first level branches into three options, R, B, and Y. From R, the second level branches into B and Y. From B, the second level branches into R and Y. From Y, the second level branches into R and B. Each second-level branch excludes the tile already drawn at the first level.
D
Once a tile is chosen, it cannot be chosen again: Image with description A tree diagram showing three draws from a bag. The first level branches into three options, R, B, and Y. From R, the second level branches into R, B and Y. From B, the second level branches into R, B and Y. From Y, the second level branches into R, B and Y.
9

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?

A
84 point 6 percent
B
86 point 7 percent
C
13 point 3 percent
D
15 point 4 percent
10

Given that a randomly chosen person eats breakfast almost every day, what is the probability that the person also buys cereal at least once a month?

A
11 over 64
B
11 over 53
C
53 over 64
D
53 over 57

Did you find these answers helpful?

More from this Course

practice test
16 verified answers

Practice Test

practice test
16 verified answers

Practice Test

practice test
12 verified answers

Practice Test

Practice Test Answers — Geometry Concepts and…