AnswersAZ-College Prep Math BUnit Test

Unit Test — Cumulative exam Answers

50 verified answers4 views
1
Free Preview

The frequency table below will be used to make a histogram.Test ScoreNumber of Students1 - 10111 - 20021 - 30131 - 40141 - 50251 - 60461 - 70671 - 801181 - 90591 - 1004What is an appropriate scale and interval for this histogram?

A
The scale should be 0 - 10, and the interval should be 10.
B
The scale should be 0 - 15, and the interval should be 5.
C
The scale should be 1 - 10, and the interval should be 5.
D
The scale should be 1 - 15, and the interval should be 10.
2
Free Preview

What is the center of the data in the dot plot?Number of Minutes to Finish the Quiz

Question illustration
A
12
B
12.5
C
13
D
13.5
3

The means and mean absolute deviations of monthly snowfall during the winter months in two cities are shown in the table below.Means and Mean Absolute Deviations of Snowfall in North Town and South Town North TownSouth TownMean8.9 in.6.3 in.Mean Absolute Deviation0.55 in.0.48 in.The difference of the means is found and then compared to each of the mean absolute deviations. Which is true?

A
The difference between the means is about equal to the mean absolute deviation of the data sets.
B
The difference between the mean is about 2 times the mean absolute deviation of the data sets.
C
The difference between the mean is about 4 times the mean absolute deviation of the data sets.
D
The difference between the means is about 5 times the mean absolute deviation of the data sets.
4

Mrs. Dominguez asked her students to plot the number of books they read over the summer.Using the dot plot, how many students read two books?

Question illustration
A
1
B
2
C
3
D
6
5

Which are examples of statistical questions?QuestionsQuestion 1What is Mikki’s favorite time to go to sleep?Question 2What time does each student go to sleep?Question 3What time does Malia wake-up in the morning?Question 4What time does each student wake-up?

A
questions 1 and 2
B
questions 1 and 3
C
questions 2 and 4
D
questions 2 and 3
6

The dot plot shows the number of goals Erin’s soccer team scored this season.Goals Scored Per Game Which is a true statement about the dot plot?

Question illustration
A
The team never scored exactly 2 goals in a single game.
B
The team scored exactly 1 goal in 3 games this season.
C
The most goals the team scored in a single game were 8.
D
The team scored exactly 3 goals in 4 games this season.
7

LaTesha and Bernard are playing a game. Their scores for five games are shown in the table below.LaTesha’s and Bernard’s ScoresLaTesha’s Scores9245673680Bernard’s Scores6368626953Which statement comparing the means to the ranges is true?

A
The means differ by 1, but the ranges differ by 40.
B
The means differ by 1, but the ranges differ by 2.
C
The means differ by 5, but the ranges differ by 40.
D
The means differ by 5, but the ranges differ by 2.
8

A company offering tax refund anticipation loans is trying to draw new customers. The company guarantees that the annual percentage rate on its loans is 39%. What fees would the company charge on a $1,200 loan if the term of the loan is 18 days? (Round to the nearest dollar).a.$18b.$23c.$28d.$30

A
A
B
B
C
C
D
D
9

Fifty-five percent of the members of the junior varsity swim team wear glasses. Of the team members who do not wear glasses, 30 percent of them are in the 10th grade.To the nearest whole percent, what is the probability that a randomly chosen member of the JV swim team does not wear glasses and is in the 10th grade?

A
14%
B
17%
C
55%
D
67%
10

The graphs of y = 3x and y = 3x are shown below. In general, how does the growth of y = 3x compare to the growth of y = 3x?

Question illustration
A
The function y = 3x is growing slower than y = 3x.
B
The function y = 3x is growing faster than y = 3x.
C
The functions y = 3x and y = 3x are growing at the same rate.
D
The function y = 3x is growing slower than y = 3x.
11

Six students collect buttons for a project. The students have 10, 14, 15, 12, 13, and 14 buttons. They divide the buttons evenly so that each student receives the same number of buttons. How many buttons does each student receive?

A
11
B
12
C
13
D
14
12

Dwight creates a table of values for a function and plots the points. He finds that one y value divided by the next y value produces the same answer each time. What kind of function did he graph?

A
linear
B
quadratic
C
square root
D
exponential
13

Barbara got a flat tire and does not have a spare. She needs her car for work, so she goes to a business that offers payday loans in order to get the money to buy a new tire. She borrows $75 and plans to pay it back when she gets paid in 8 days. Barbara is charged a fee of $15 and the term on her loan is 8 days. Approximately what is the annual percentage rate on her loan?a.228%b.487%c.913%d.973%

A
A
B
B
C
C
D
D
14

The histogram below shows the number of properties in a town that sold within certain time periods. Why might the graph be considered misleading?

Question illustration
A
The scales on the x- and y-axes are unequal.
B
The interval on the x-axis is too large for the data set.
C
The scale on the y-axis misrepresents the difference in the heights of the bars.
D
The interval on the y-axis is too large for the data set.
15

Benson has a bankruptcy on his credit report, so he pays higher interest rates on his current loans. He calculates that the extra money he pays in additional interest each year, if invested at the rate of 2% for one year, could earn him simple interest totaling $180. How much does Benson pay in additional interest each month? a.$360b.$750c.$900d.$1,000

A
A
B
B
C
C
D
D
16

Julia surveyed the players on her soccer team to see how many hours each member practiced during the week. Her data is shown in the histogram. Which of the following best describes the histogram?

Question illustration
A
The histogram is evenly distributed.
B
The histogram is symmetrical.
C
The left side of the histogram has a cluster.
D
The left side of the histogram is the mirror image of the right side.
17

Norman would like to purchase a new bicycle. He looks at bicycles that are priced at $249, $449, $269, $259, and $329. What is the mean, or average, price of these bicycles?

A
$269
B
$289
C
$302
D
$311
18

The two-way table represents data from a survey asking students whether they plan to attend college, travel, or both after high school. Which is the marginal relative frequency for students who plan to attend college? Round the answer to the nearest percent.

Question illustration
A
18%
B
22%
C
35%
D
82%
19

Which expression is equivalent to (4 + 7i)(3 + 4i)?

A
–16 + 37i
B
12 – 28i
C
16 – 37i
D
37 + 16i
20

According to the rule of 72, which statement is true?

Question illustration
A
An investment of $3,100 will double in 12 years at a compound interest rate of 5%.
B
An investment of $9,000 will double in 10 years at a compound interest rate of 7%.
C
An investment of $4,500 will double in 8 years at a compound interest rate of 9%.
D
An investment of $3,000 will double in 4 years at a compound interest rate of 12%.

Did you find these answers helpful?

More from this Course

Quiz
2 verified answers

Cumulative Exam

RC
25 verified answers

Cumulative Exam

Quiz
25 verified answers

Unit Test