7th Final Exam Study Guide 2nd Semester

For Problems 2 and 3, determine whether each sample may be biased. Explain.
2. A landlord e-mails 60 of his 1,250 tenants and surveys them to determine whether they would
like to use the Internet to pay rent.
________________________________________________________________________________
3. An insurance company surveys 350 of its customers by randomly choosing names from its
customer database and then telephoning the customers.
________________________________________________________________________________
Explain whether you would survey the entire population or use a sample.
4. You want to know how many hours members of a sports team train each week during the offseason.
________________________________________________________________________________
5. You want to know the average income of people who eat at vegetarian restaurants across the
country.
Use the data for Exercises 13.
38, 42, 26, 32, 40, 28, 36, 27, 29, 6, 30
1. Make two box-and-whisker plots of the data on the same number line: one plot with the outlier and one plot without
the outlier.
2. How does the outlier affect the interquartile range of the data?
________________________________________________________________________________
3. Which is affected more by the outlier: the range or the interquartile range?
________________________________________________________________________________
The table shows scores for two golfers. Use the table for Exercises 47.
Henry
Trish
78
82
80
84
74
81
91
82
73
80
88
89
92
86
94
90
78
78
80
85
4. Make two box-and-whisker plots of the data on the same number line.
5. Which golfer has the lower median score? _________________

6. Which golfer has the lesser interquartile range of scores? _________________
7. Which golfer appears to be more consistent? _________________
Name_________________________________________ Date____________________ Class___________________
Find the mean, median, mode, and range of each data set.
1. 21, 14, 17, 16, 23, 17, 15, 13
_____________________________________
2. 44, 56, 38, 55, 62, 56, 48, 62, 56
6.Bart has these quiz scores: 78, 76, 74, 80, 82, 78, 82, 75, 77, 82. Bart tells his
parents that his typical quiz score is an 82. Which measure of central
tendency did Bart use to describe his typical score? Do you think Barts
measure of central tendency best described his typical score? Explain.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
6.A factory produces 12,000 computers per week. The manager of a factory claims
that fewer than 50 defective computers are produced each week. In a random
sample of 500 computers, 2 were defective. Tell if the managers claim is
likely to be true and why.
14.Hillsboro Middle School has 714 students. Joanna surveys a random sample of 34 students and finds
that 9 of them play a musical instrument. How many students at the school are likely to play a
musical instrument?
Use the figure for 35.
3. What type of angle is SXR?

_____________________________________
4. Name two supplementary angles.
_____________________________________
_____________________________________
5.
What is the measure of TXZ?

----------------------------------------
Use the figure for 68. Lines AB, CD, and EF are parallel.
Holt McDougal Mathematics
Name_________________________________________ Date____________________ Class___________________
6. What is the measure of 1?

_____________________________________
7. What type of angle is formed by adding together 1 and 2?
_____________________________________
8. What is the measure of 2?
_____________________________________
12.Find the volume of the cylinder. Use 3.14 for and round to the nearest tenth.
13. A storage trunk is 32 inches wide by 26 inches deep by 22 inches high. What
is the volume of the trunk?
_____________________________________
14.Find the surface area of the prism shown without a top.
15.Find the surface area of the cylinder shown without one of its bases. Round
your answer to the nearest tenth. Use 3.14 for.
_____________________________________
16.A cylindrical soup can has a base radius of 2.5 inches and a height of
5 inches. If the cans label covers the sides completely, but not the bases, what is the surface area of
the label? Use 3.14 for.
_____________________________________
2.The results of a survey show that baseball is the favorite sport for 27 out of 50 people. What is the
probability that a persons favorite sport will NOT be baseball? Write
the probability as a percent.
Name_________________________________________ Date____________________ Class___________________
_____________________________________
3. Judith scored an 85 or higher on 19 of the 25 math tests she took this year. What is the experimental
probability that she will score an 85 or higher on her next test? Write the probability as a percent.
_____________________________________
4. During his first 20 picks from a bag of marbles, Merle chose 8 yellow marbles, 9 green marbles, and
3 blue marbles. What is the experimental probability that Mark will choose a green marble on his next
pick? Write the probability as a percent.
_____________________________________
1.What is the value of x?
value of y?
6x 7 41
2. What is the
5y 23
68
_____________________________________
-------------------------
-----------------3. What is the value of n?

value of t?
8n 11 29
36
_____________________________________
5. What is the
25 +6t 7
-------------------------
--------------6. What is the value of y?

value of x?
5(y 4) 12 43
8. What is the
9x 5x
44
_____________________________________
-------------------------
-----------------9.What is the value of y?

6y 22 4y 42
_____________________________________
14.Graph the inequality.

x 9 7
15.Write an inequality that has the following graphed solution.
_____________________________________
Name_________________________________________ Date____________________ Class___________________
16.Solve the inequality for x.

for x.
12x 48
_____________________________________
17. Solve the inequality

3x 15
-------------------------------------------___________
18.Graph the solution to the inequality.
the inequality.
8(x 2) 6 6
19. Graph the solution to

3(x+1) 3 21
20.Solve the inequality for x.

1.5x 3 3x 6
_____________________________________
5. Helena rolls a number cube and spins a spinner with five equal sections. How
many outcomes are possible?
_____________________________________
6. Ricks Deli offers a lunch special on sandwiches on white, rye, pumpernickel, or whole wheat bread.
You can also choose between
roasted vegetables and chicken. How many different sandwiches can you order for the lunch
special?
_____________________________________
8. Damon made 16 out of 20 free throw shots. About how many out of the next 30 free throw shots
would you expect him to make?
_____________________________________
Topics to be covered on the final exam:

*Probability
*Measures of Central Tendency
*Box and Whisker Plots
*Finding measures to angles
*Volume, Surface Area, Area
*Solving Equations
*Solving Inequalities and Graphing the solution set.

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For Problems 2 and 3, determine whether each sample may be biased. Explain.

5. Which golfer has the lower median score? _________________

Name_________________________________________ Date____________________ Class___________________

Use the figure for 35.

3. What type of angle is SXR?

What is the measure of TXZ?

Holt McDougal Mathematics

Name_________________________________________ Date____________________ Class___________________

6. What is the measure of 1?

Name_________________________________________ Date____________________ Class___________________

-----------------3. What is the value of n?

--------------6. What is the value of y?

-----------------9.What is the value of y?

14.Graph the inequality.

15.Write an inequality that has the following graphed solution.

Holt McDougal Mathematics

Name_________________________________________ Date____________________ Class___________________

16.Solve the inequality for x.

17. Solve the inequality

19. Graph the solution to

20.Solve the inequality for x.

Topics to be covered on the final exam:

Holt McDougal Mathematics

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