Name: 
 

Pre Algebra Chapter 12



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

A number cube was rolled 18 times. The results are shown. Display the data in a frequency table.
264563141
423566214
a.
mc001-1.jpg
c.
mc001-3.jpg
b.
mc001-2.jpg
d.
mc001-4.jpg
 

 2. 

Use the frequency table to determine how many students received a score of 60 or better on an English exam.
Score
Frequency
50–59
1
60–69
8
70–79
3
80–89
7
90–100
4
a.
8 students
b.
9 students
c.
14 students
d.
22 students
 

 3. 

Draw a line plot for the frequency table.
Number123456
Frequency453226
a.
mc003-1.jpg
c.
mc003-3.jpg
b.
mc003-2.jpg
d.
mc003-4.jpg
 

 4. 

Find the range of the data.
Scores: 90, 89, 87, 79, 89, 84, 80, 85, 85, 79
a.
11
b.
7
c.
12
d.
15
 

 5. 

Display the set of data in a frequency table and a line plot.
90  92  93  91  92  92  94  96
a.
mc005-1.jpgmc005-2.jpg
b.
mc005-3.jpgmc005-4.jpg
c.
mc005-5.jpgmc005-6.jpg
d.
mc005-7.jpgmc005-8.jpg
 

 6. 

The line plot shows on which day of the week you and your classmates were born. Which statement is NOT true?
mc006-1.jpg
a.
Two students were born on a Wednesday.
b.
There are 15 students in your class.
c.
More students were born on a Tuesday than on a Monday.
d.
The range of the data is 5.
 
 
Draw the box-and-whisker plot for the data.
 

 7. 

33, 50, 30, 45, 30, 41, 27, 34, 50, 49, 40, 40, 35, 25, 28
a.
mc007-1.jpg
c.
mc007-3.jpg
b.
mc007-2.jpg
d.
mc007-4.jpg
 

 8. 

21  29  25  20  36  28  32  35  28  30  29  25  21  35  26  35  20  19
a.
mc008-1.jpg
b.
mc008-2.jpg
c.
mc008-3.jpg
d.
none of these
 
 
Compare the data sets by making two box-and-whisker plots above one number line.
 

 9. 

Set X: 14, 11, 7, 1, 5, 4, 6, 13, 2, 12, 13, 4, 3, 14, 15, 15
Set Y: 10, 9, 7, 4, 11, 15, 15, 8, 6, 9, 4, 10, 7, 13, 4, 5
a.
mc009-1.jpg
b.
mc009-2.jpg
c.
mc009-3.jpg
d.
mc009-4.jpg
 

 10. 

Grades of Class A: 71, 78, 95, 68, 91, 95, 85, 76, 94, 77, 79, 95, 82, 93, 92, 70
Grades of Class B: 86, 98, 99, 64, 80, 89, 63, 95, 70, 69, 81, 77, 72, 87, 96, 79
a.
mc010-1.jpg
b.
mc010-2.jpg
c.
mc010-3.jpg
d.
mc010-4.jpg
 

 11. 

Describe the data in the box-and-whisker plot.
mc011-1.jpg
a.
The lowest value is 58.5 and the highest value is 74. The median is 67. At least half of the data are within 8.5 points of the median.
b.
The values range from 50 to 83. At least half of the data are within 7 points of the median, 67.
c.
The lowest value is 50 and the highest value is 83. The median is 67. At most half of the data are within 7 points of the median.
d.
The values range from 50 to 83. At least half of the data are within 8.5 points of the median, 67.
 

 12. 

Use the two box-and-whisker plots to determine which statement is true.
mc012-1.jpg
a.
They have the same median.
c.
The upper quartiles are equal.
b.
They have the same range.
d.
The lower quartiles are equal.
 

 13. 

The graphs show the number of students receiving A’s in each grade at Glenwood Middle School. Which statement is true?
mc013-1.jpgmc013-2.jpg
a.
The second graph shows greater changes in the number of A’s than the first graph.
b.
The second graph exaggerates the differences between the numbers of A’s.
c.
The two graphs are exactly the same.
d.
The scale of the first graph exaggerates the number of A’s because it starts at zero.
 

 14. 

Which graph suggests that the number of sit-ups Mark did in November was more than double the number of sit-ups he did in September?
a.
mc014-1.jpg
c.
mc014-3.jpg
b.
mc014-2.jpg
d.
mc014-4.jpg
 

 15. 

Use the data in the table. Make a graph that suggests a rapid increase in population from 1994 to 2004.
Year
Population
1994
400
1996
404
1998
410
2000
412
2002
415
2004
420
a.
mc015-1.jpg
c.
mc015-3.jpg
b.
mc015-2.jpg
d.
mc015-4.jpg
 

 16. 

A sandwich is made with only one type of bread, one type of meat, and one type of cheese. There are 3 types of bread: white, wheat, or rye; 2 types of meat: turkey or roast beef; and 2 types of cheese: American or Swiss. Draw a tree diagram to show the number of sandwich choices.
a.
mc016-1.jpg
c.
mc016-3.jpg
b.
mc016-2.jpg
d.
mc016-4.jpg
 

 17. 

You can order a skirt with the three different lengths (knee, mid-calf, ankle) and the four different colors (navy, black, khaki, denim). Draw a tree diagram to show the number of choices.
a.
mc017-1.jpg
c.
mc017-3.jpg
b.
mc017-2.jpg
d.
mc017-4.jpg
 

 18. 

A lunch menu consists of 5 different sandwiches, 2 different soups, and 5 different drinks. How many choices are there for ordering a sandwich, a bowl of soup, and a drink?
a.
12 choices
b.
72 choices
c.
50 choices
d.
69 choices
 

 19. 

Ms. Wong is redecorating her office. She has a choice of 7 colors of paint, 4 kinds of curtains, 3 colors of carpet, and 2 styles of furniture. How many different ways are there to redecorate if she can choose two different colors of paint, one kind of curtain, one color of carpet, and one style of furniture?
a.
168 ways
b.
1,008 ways
c.
1,176 ways
d.
23 ways
 

 20. 

Use the table.
a.How many possible pairs of jeans are there if each pair has one style and one color?
b.Suppose you have one pair of jeans of each possible style and color in the table. What is the probability of choosing a pair of black jeans at random?

StyleColor
regularlight blue
loose fitindigo
boot cutwashed
slim fitblack
 blue
a.
30 pairs; mc020-1.jpg
b.
9 pairs; mc020-2.jpg
c.
20 pairs; mc020-3.jpg
d.
4 pairs; mc020-4.jpg
 

 21. 

There are many different license-plate systems being used in the United States. Which system provides for the greatest possible number of license plates?
a.
License plates display three letters and three digits.
b.
License plates display two letters and four digits.
c.
License plates display five letters.
d.
License plates display four letters and two digits.
 

 22. 

Suppose x coins are tossed. Write an expression to represent the number of possible outcomes.
a.
mc022-1.jpg
b.
mc022-2.jpg
c.
mc022-3.jpg
d.
mc022-4.jpg
 

 23. 

A spinner that has 3 sections of equal area, numbered from 1 to 3, is spun two times in succession. Which is NOT part of the sample space?
a.
(1, 3)
b.
(3, 3)
c.
(3, 2)
d.
(3, 4)
 

 24. 

Find the sample space for tossing 2 coins. Then find P(exactly 1 head).
a.
mc024-1.jpg
b.
mc024-2.jpg
c.
mc024-3.jpg
d.
mc024-4.jpg
 
 
Use the Counting Principle to find the probability.
 

 25. 

choosing the 8 winning lottery numbers when the numbers are chosen at random from 0 to 9
a.
mc025-1.jpg
b.
mc025-2.jpg
c.
mc025-3.jpg
d.
mc025-4.jpg
 

 26. 

rolling a 4 on each of 4 number cubes
a.
mc026-1.jpg
b.
mc026-2.jpg
c.
mc026-3.jpg
d.
mc026-4.jpg
 

 27. 

Suppose you roll two number cubes and pick a letter of the alphabet at random. Find the probability you roll 2 even numbers and pick one of the vowels a, e, i, o, or u.
a.
mc027-1.jpg
b.
mc027-2.jpg
c.
mc027-3.jpg
d.
mc027-4.jpg
 

 28. 

Jason and Kyle both choose a number from 1 to 10 at random. What is the probability that both numbers are odd?
a.
mc028-1.jpg
b.
mc028-2.jpg
c.
mc028-3.jpg
d.
mc028-4.jpg
 

 29. 

Which describes independent events?
a.
You grab two jelly beans from a jar at the same time.
b.
You draw a card from a deck, replace it, and draw a second.
c.
You draw a card and do not replace it. Then you draw another.
d.
You study English every night, and then you get an A on the next test.
 

 30. 

A drawer contains 4 red socks, 3 white socks, and 3 blue socks. Without looking, you select a sock at random, replace it, and select a second sock at random. What is the probability that the first sock is blue and the second sock is red?
a.
mc030-1.jpg
b.
mc030-2.jpg
c.
mc030-3.jpg
d.
mc030-4.jpg
 

 31. 

Two urns each contain green balls and blue balls. Urn I contains 4 green balls and 6 blue balls, and Urn II contains 6 green balls and 2 blue balls. A ball is drawn at random from each urn. What is the probability that both balls are blue?
a.
mc031-1.jpg
b.
mc031-2.jpg
c.
mc031-3.jpg
d.
mc031-4.jpg
 

 32. 

Find the probability that 3 students chosen at random were all born on a Wednesday.
a.
mc032-1.jpg
b.
mc032-2.jpg
c.
mc032-3.jpg
d.
mc032-4.jpg
 

 33. 

A local weather forecaster is accurate 85% of the time when predicting precipitation for the day. What is the probability that she will make correct precipitation predictions 4 days in a row? Round to the nearest whole percent.
a.
about 54%
b.
about 53%
c.
about 52%
d.
about 47%
 

 34. 

The probability that Shania is on time for school is mc034-1.jpg. Find the probability that Shania arrives on time for school for the next 5 days. Express your answer as a percent, to the nearest tenth of a percent.
a.
50%
b.
15.6%
c.
11.4%
d.
3.1%
 

 35. 

On a 9-question true-or-false test you randomly guess at the answers. What is the probability that you get all 9 answers correct? What is the probability that you get all 9 answers wrong?
a.
mc035-1.jpg; mc035-2.jpg
b.
mc035-3.jpg; mc035-4.jpg
c.
mc035-5.jpg; mc035-6.jpg
d.
mc035-7.jpg; mc035-8.jpg
 

 36. 

A bag contains 6 purple marbles and 7 white marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is white and the second one is purple?
a.
mc036-1.jpg
b.
mc036-2.jpg
c.
mc036-3.jpg
d.
mc036-4.jpg
 
 
You select a card at random. Without replacing the card, you select a second card. Find the probability.
nar004-1.jpgnar004-2.jpg
 

 37. 

P(M, then H)
a.
mc037-1.jpg
b.
mc037-2.jpg
c.
mc037-3.jpg
d.
mc037-4.jpg
 

 38. 

P(T, then a vowel)
a.
mc038-1.jpg
b.
mc038-2.jpg
c.
mc038-3.jpg
d.
mc038-4.jpg
 

 39. 

P(C, then T or S)
a.
mc039-1.jpg
b.
mc039-2.jpg
c.
mc039-3.jpg
d.
mc039-4.jpg
 

 40. 

In how many different ways can you arrange 7 books on a shelf?
a.
823,543 ways
b.
5,040 ways
c.
720 ways
d.
28 ways
 

 41. 

There are 4 children in Maria’s family. In how many ways can you list the children in all possible age orders?
a.
6 ways
b.
24 ways
c.
10 ways
d.
256 ways
 

 42. 

How many permutations can be made using the letters S, T, U, D, Y, H, A, R, D?
a.
1 permutation
c.
9 permutations
b.
362,880 permutations
d.
456,225 permutations
 

 43. 

How many 3-letter permutations are possible for the letters S, T, U, D, Y, H, A, R, D?
a.
72 permutations
c.
3,024 permutations
b.
729 permutations
d.
504 permutations
 
 
Simplify the expression.
 

 44. 

mc044-1.jpg
a.
840
b.
20
c.
30
d.
120
 

 45. 

mc045-1.jpg
a.
11,880
b.
95,040
c.
1,235,520
d.
7,920
 

 46. 

mc046-1.jpg
a.
10
b.
10
c.
60
d.
20
 

 47. 

mc047-1.jpg
a.
306
b.
306
c.
153
d.
18
 

 48. 

In how many ways could you choose two different letters from the letters M, A, T, H?
a.
12 ways
b.
24 ways
c.
6 ways
d.
18 ways
 

 49. 

In how many ways could you choose two different letters from the letters C, O, U, N, T?
a.
60 ways
b.
20 ways
c.
120 ways
d.
10 ways
 

 50. 

The Burger Diner offers burgers with or without any or all of the following: catsup, lettuce, and mayonnaise. How many different burgers can you order?
a.
8 burgers
c.
12 burgers
b.
3 burgers
d.
7 burgers
 

 51. 

A panel of judges must consist of four women and three men. A list of potential judges includes six women and five men. How many different panels could be created from this list?
a.
30 panels
b.
150 panels
c.
25 panels
d.
300 panels
 
 
Does the problem involve permutations or combinations? Explain.
 

 52. 

In how many different ways could a committee of 5 students be chosen from a class of 25 students?
a.
Permutations; the order matters.
b.
Permutations; the order does not matter.
c.
Combinations; the order does not matter.
d.
Combinations; the order matters.
 

 53. 

In how many ways could six horses come in first, second or third in a race?
a.
Combinations; the order does not matter.
b.
Combinations; the order matters.
c.
Permutations; the order does not matter.
d.
Permutations; the order matters.
 

 54. 

In your last 23 basketball games, you attempted 101 free throws and made 66. Find the experimental probability that you make a free throw. Write the probability as a percent, to the nearest tenth of a percent.
a.
65.3%
b.
69.8%
c.
69.7%
d.
65.7%
 

 55. 

A number cube is rolled with these results: 64 ones, 67 twos, 73 threes, 59 fours, 72 fives, and 71 sixes. What is the experimental probability of rolling an even number? Write your answer as a percent, to the nearest tenth of a percent.
a.
51.9%
b.
48.5%
c.
53.6%
d.
46.8%
 

 56. 

You work at a T-shirt printing business. Of the 2,800 T-shirts shipped, 396 have a defect. What is the experimental probability that a T-shirt has a defect? Write your answer as a percent, to the nearest tenth of a percent.
a.
15.3%
b.
14.1%
c.
11.7%
d.
19.4%
 

 57. 

The results of a coin toss are shown. What is P(heads)?
HTHHHTHTTHHTHTT
THHTHTTHHHHTHTT
a.
mc057-1.jpg
b.
mc057-2.jpg
c.
mc057-3.jpg
d.
mc057-4.jpg
 

 58. 

A spinner with three congruent sections is spun with the results as shown. What is P(1)?
1 3 3 2 1 2 1 1 3 3 2 1 1 1 2 2 2 3 3 1 3
a.
mc058-1.jpg
b.
mc058-2.jpg
c.
mc058-3.jpg
d.
mc058-4.jpg
 
 
Is the sample described a good sample? Explain.
 

 59. 

To find the average age of drivers in a particular city, use all the names of people with driver’s licenses put into a file. One hundred names are picked blindly from the file as a sample.
a.
No; the sample is not selected from the population to be studied.
b.
No; the sample is not random.
c.
Yes; the sample is selected at random from the population to be studied.
 

 60. 

To find the average income of an adult in the United States, 250 workers in Tennessee are questioned.
a.
No; the sample is not random.
b.
Yes; the sample is selected at random from the population to be studied.
c.
No; the sample is not selected from the population to be studied.
 

 61. 

To find the average number of shoppers in a particular store, shoppers are counted on two consecutive Saturday mornings.
a.
No; the sample is not selected from the population to be studied.
b.
No; the sample is not random.
c.
Yes; the sample is selected at random from the population to be studied.
 

 62. 

You want to find out the favorite subjects of students at your school. Which plan describes a good sample?
a.
Interview a group of students on their way to the library.
b.
Interview students leaving a classroom.
c.
Interview a group of students standing together in the hallway.
d.
Interview every tenth student leaving an all-school assembly.
 

 63. 

A worker takes a random sample of 200 bolts and finds that 30 of them are either too long or too short, thus making them unusable. Estimate the number of unusable bolts in a production of 17,000 bolts.
a.
1,610 bolts
b.
2,550 bolts
c.
2,140 bolts
d.
2,260 bolts
 

 64. 

Out of 1,100 discs tested, 13 are defective. Estimate the number of defective discs in a batch of 41,000.
a.
about 485 discs
c.
about 4,850 discs
b.
about 970 discs
d.
about 49 discs
 

 65. 

Out of a random sample of 330 apples, 25 are rated “AAA.” Estimate the number of apples that would be rated “AAA” in a crop of 57,000 apples.
a.
about 432 apples
c.
about 43,180 apples
b.
about 4,318 apples
d.
about 8,636 apples
 

Short Answer
 

 66. 

Display the data in a frequency table.
10121115101312131012
 
 
Solve by simulating the problem.
 

 67. 

You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the experimental probability that you will guess exactly three out of five questions correctly?
 

 68. 

What is the experimental probability that exactly 3 children in a family of 4 children will be boys? Assume that P(boy) = P(girl).
 

 69. 

The graph shows the population of four towns.
sa069-1.jpg
a.Which town appears to have about twice the population of Town C?
b.Which town actually has twice the population of Town C?
c.Explain why the graph is misleading.
 

Essay
 

 70. 

Use the data to make two different graphs. Draw one of the graphs to present the data accurately and one graph that distorts or misleads. Explain your reasoning.

Student
Grade
Joan
65%
Jill
92%
Matt
88%
Bill
85%
 

 71. 

Elijah and Angelina are playing a game that uses two piles of cards. Each of the 12 cards in one pile lists one month of the year. Each of the 7 cards in the other pile lists a day of the week. On each person’s turn, the player randomly chooses one card from each pile. What is the probability of choosing a month beginning with the letter J and a day beginning with the letter T? Show your work.
 

 72. 

You spin two spinners, each of which is divided into five congruent sections numbered 1 to 5. List all possible outcomes. Then find the probability of getting the same number on both spins. Show your work.
 

Other
 

 73. 

Use this set of numbers: 39, 23.2, 18, 36.9, 45, 52. Add one more number to the data so that the range is 40. Explain how you found the number.
 

 74. 

Ms. Brodie drew two box-and-whisker plots to represent her students’ scores on the mid-year test and the final exam. What do the plots tell you about the progress of Ms. Brodie’s class?
ot074-1.jpg
 

 75. 

The graph shows the cost of a large cheese pizza at three different restaurants. Explain how the size of the bars in the graph gives a false impression about the cost of a pizza at different restaurants.
ot075-1.jpg
 

 76. 

What impression does the graph below give you about home sales in Johnston? Is it misleading? Explain.

ot076-1.jpg     
 

 77. 

Explain the difference between dependent and independent events.
 

 78. 

Arlene was given four pictures and asked to present four different combinations of all four pictures. Is this possible? Explain.
 

 79. 

You want to find out how popular football is at your school. Design a survey plan that describes a good sample. Explain.
 



 
Check Your Work     Start Over