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Practice Test Chapter 4


Exam

Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
 
Provide an appropriate response.
1)  A single six-sided die is rolled. Find the probability of rolling a seven. 1) ______
  A)  0.1
  B)  0
  C)  1
  D)  0.5

2)  A study of 1000 randomly selected flights of a major airline showed that 782 of the flights arrived on time. What is the probability of a flight arriving on time? 2) ______
  A) 
  B) 
  C) 
  D) 

3)  If one card is drawn from a standard deck of 52 playing cards, what is the probability of drawing an ace? 3) ______
  A) 
  B) 
  C) 
  D) 

4)  Which of the following cannot be a probability? 4) ______
  A)  0.001
  B)  0
  C)  -87
  D) 

5)  Rank the probabilities of 10%, , and 0.06 from the least likely to occur to the most likely to occur. 5) ______
  A)  , 10%, 0.06
  B)  10%, , 0.06
  C)  0.06, , 10%
  D)  0.06, 10%,

6)  Classify the events as dependent or independent. Events A and B where
P(A)
= 0.6, P(B) = 0.3, and P(A and B) = 0.17
6) ______
  A)  dependent
  B)  independent

7)  You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places. 7) ______
  A)  0.994
  B)  0.500
  C)  0.006
  D)  0.250

8)  A multiple-choice test has five questions, each with five choices for the answer. Only one of the choices is correct. You randomly guess the answer to each question. What is the probability that you answer the first two questions correctly? 8) ______
  A)  0.04
  B)  0.4
  C)  0.2
  D)  0.02

9)  The events A and B are mutually exclusive. If P(A) = 0.2 and P(B) = 0.4, what is P(A or B)? 9) ______
  A)  0.6
  B)  0.2
  C)  0
  D)  0.08

10)  The table lists the smoking habits of a group of college students.



If a student is chosen at random, find the probability of getting someone who is a man or a non
-smoker. Round your answer to three decimal places.
10) ______
  A)  0.936
  B)  0.820
  C)  0.941
  D)  0.948

11)  One hundred people were asked, "Do you favor the death penalty?" Of the 33 that answered "yes" to the question, 14 were male. Of the 67 that answered "no" to the question, six were male. If one person is selected at random, what is the probability that this person answered "yes" or was a male? 11) ______
  A)  0.67
  B)  0.39
  C)  0.53
  D)  0.13

12)  The events A and B are mutually exclusive. If P(A) = 0.2 and P(B) = 0.1, what is P(A and B)? 12) ______
  A)  0.5
  B)  0.3
  C)  0
  D)  0.02

13)  State whether the variable is discrete or continuous.
The number of cups of coffee sold in a cafeteria during lunch
13) ______
  A)  discrete
  B)  continuous

14)  The random variable x represents the number of cars per household in a town of 1000 households. Find the probability of randomly selecting a household that has at least one car.

14) ______
  A)  0.500
  B)  0.875
  C)  0.083
  D)  0.125

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