Unformatted text preview: 0.98
B. 0.95
C. 0.75
D. 0.96
E. 0.50 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability 72. An urn contains five white, three red, and four black balls. Three are drawn at random
without replacement.
What is the probability that no ball is red?
A. 0.7500
B. 0.0156
C. 0.2917
D. 0.4219
E. 0.3818 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Hard
Topic: Probability 1307 Chapter 01  An Introduction to Business Statistics 73. The probability of event A occurring given that event B has already occurred is 0.61. The
probability of both events occurring is 0.5. What is the probability of event B occurring?
A. 0.305
B. 0.195
C. 0.390
D. 0.820
E. 0.500
P(AB) = p(A∩B)/P(AB) = .5/.61 = 0.81967 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability & Conditional 74. What is the probability that any two people chosen at random were born on the same day
of the week?
A. 1/7
B. 1/49
C. 2/7
D. 2/49 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Hard
Topic: Probability & Independence 75. A letter is drawn from the alphabet of 26 letters. What is the probability that the letter
drawn is a vowel?
A. 5/26
B. 1/26
C. 4/26
D. 21/26 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Easy
Topic: Probability 1308 Chapter 01  An Introduction to Business Statistics 76. How many times must a die be tossed if the expected number of ones is five?
A. 5
B. 30
C. 35
D. 6 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability 77. Which of the following are properties of a valid discrete probability distribution?
A. p(X) 0, for all X
B. ∑p(X) = 1
C. A only
D. B only
E. A and B AACSB: Analytical Studies
Bloom's: Knowledge
Difficulty: Hard
Topic: Probability & Independence 78. If A and B are independent events, P(A) = .2, and P(B) = .7, determine P(A
A. 0.90
B. 0.14
C. 0.76
D. 0.50
E. 0.24 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability & Independence 1309 B) Chapter 01  An Introduction to Business Statistics 79. If events A and B are mutually exclusive, calculate P(AB).
A. Can't be determined
B. 0
C. 1
D. 0.50 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Hard
Topic: Probability & Mutual Exclusive Events 80. What is the probability of rolling a six with a fair die five times in a row?
A. 1/6
B. 1/46,656
C. 1/7,776
D. 5/7,776
(1/6)5 = 1/7,776 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Hard
Topic: Probability & Independence 81. If a product is made using five individual components, and P(product meets
specifications) = P(E) = .98, what is the probability of an individual component meeting
specifications assuming that this probability is the same for all five components?
A. 0.98
B. 0.996
C. 0.004
D. 0.02
E. 0.904
P(E)5 = AACSB: Analytical Studies
Bloom's: Application
Difficulty: Hard
Topic: Probability & Independence 1310 Chapter 01  An Introduction to Business Statistics 82. If P(AB) = .2 and P(B) = .8, determine the intersection of event A and B.
A. 0.20
B. 1.0
C. 0.25
D. 0.16
E. 0.60
(.2)(.8) = .16 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability & Conditional 83. If P(A
A. 0.6
B. 0.3
C. 0.5
D. 0.27
E. 0.33 B) = .3 and P(AB) = .9, find P(B). AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability 1311 Chapter 01  An Introduction to Business Statistics 84. Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is male?
A. .667
B. .367
C. .333
D. .500
E. .917 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability 1312 Chapter 01  An Introduction to Business Statistics 85. Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is male and
salaried staff?
A. .15
B. .10
C. .38
D. .50
E. .85 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability & Intersection 1313 Chapter 01  An Introduction to Business Statistics 86. Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is female given
that the employee is a salaried member of staff?
A. .167
B. .500
C. .625
D. 267
E. .375 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability 1314 Chapter 01  An Introduction to Business Statistics 87. Employees of a local university have been classified according to gender and job type. If an employee is selected at random what is the probability that the employee is female or
works as a member of the faculty?
A. 0.73
B. 0.08
C. 0.33
D. 0.70
E. 0.05 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Probability &am...
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 Winter '14
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