Back to the Chapter List

For each question, select the button next to your answer. When you've completed the test, click "Submit for Grade" in order to see your results.

1.  

Find the indicated probability.

A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue?

1/9
1/4
1/5
1/3


2.  

Answer the question, considering an event to be "unusual" if its probability is less than or equal to 0.05.

Is it "unusual" to get 5 when a pair of dice is rolled?

Yes
No


3.  

Use the relative frequency approach to estimate the probability of the event.

In a certain class of students, there are 8 boys from Wilmette, 5 girls from Kenilworth, 9 girls from Wilmette, 5 boys from Glencoe, 5 boys from Kenilworth and 7 girls from Glenoce. If the teacher calls upon a student to answer a question, what is the probability that the student will be from Kenilworth?

0.37
0.256
0.278
0.128


4.  

From the information provided, create the sample space of possible outcomes.

Flip a coin three times.

HTT THT HTH HHH TTH TTT
HHH TTT THT HTH HHT TTH HTH
HHH HTT HTH TTT HTT THH HHT THT
HHH HHT HTH HTT THH THT TTH TTT


5.  

Answer the question.

If P(A) = 1/6 then find the odds against A happening.

1:5
5:1
1:6
None of the above is correct.


6.  

Determine whether the events are mutually exclusive.

Read a book by Mark Twain.

Read about Tom Sawyer.

No
Yes


7.  

Find the indicated probability.

The probability that Luis will pass his statistics test is 0.58. Find the probability that he will fail his statistics test.

1.72
0.29
1.38
0.42


8.  

A study of consumer smoking habits includes 193 people in the 18-22 age bracket ( 60 of whom smoke), 127 people in the 23-30 age bracket ( 35 of whom smoke), and 96 people in the 31-40 age bracket ( 23 of whom smoke). If one person is randomly selected from this sample, find the probability of getting someone who is age 23-30 or smokes.

0.276
0.084
0.505
0.589


9.  

0.37
0.65
0.59
0.32


10.  

Is Event B dependent or independent of Event A?

P(A) = 0.7, P(B) = 0.8, P(A and B) = 0.38

Dependent
Independent


11.  

Find the indicated probability.

In one town, 64% of adults have health insurance. What is the probability that 10 adults selected at random from the town all have health insurance?

0.012
0.156
6.4
0.64


12.  

0.000003860
0.2591
0.1764
0.1884


13.  

Describe the complement of the given event.

When 6 diners have lunch, none of them orders liver and onions.

When 5 diners have lunch, at least one of them orders liver and onions.
When 6 diners have lunch, all of them order liver and onions.
When 6 diners have lunch, at least one of them orders liver and onions.
When 6 diners have lunch, at least 5 of them order liver and onions.


14.  

Find the indicated probability.

A sample of 4 different calculators is randomly selected from a group containing 18 that are defective and 35 that have no defects. What is the probability that at least one of the calculators is defective?

0.179
0.810
0.180
0.821


15.  

0.496
0.723
0.353
0.388


16.  

Evaluate the expression.

56
0
1
21


17.  

Solve the problem.

The organizer of a television show must select 5 people to participate in the show. The participants will be selected from a list of 29 people who have written in to the show. If the participants are selected randomly, what is the probability that the 5 youngest people will be selected?

8/29
1/120
1/14,250,600
1/118,755


18.  

A class has 9 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from shortest to tallest? (Assume that no two students are the same height.)

0.1000
0.00000276
0.0000248
0.00002756


19.  

Answer the question.

If an apple is hanging from a string and three flies land on it, find the probability that all three are on points that are within the same hemisphere.

0.125
0.25
4
0.333

   


© 2000 by Addison Wesley Longman
A division of Pearson Education