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Unformatted text preview: 21. Determine whether the two events are mutually exclusive
An unmarried person and a person with an employed spouse
A. Mutually exclusive
B. Not Mutually exclusive 122. Determine whether the two events are mutually exclusive
Someone born in the United States and a US citizen
A. Mutually exclusive
B. Not Mutually exclusive 1269 Chapter 01  An Introduction to Business Statistics 123. Determine whether the two events are mutually exclusive
A voter who favors gun control and a conservative voter
A. Mutually exclusive
B. Not Mutually exclusive 124. Determine whether the two events are mutually exclusive
A voter who is a registered Democrat and a voter who favors a Republican candidate
A. Mutually exclusive
B. Not Mutually exclusive 125. In a recent survey of homes in a major Midwestern city, 10% of the homes have a fax
machine and 52% have a personal computer. Suppose 91% of the homes with a fax machine
also have a personal computer.
What percent of homes have a fax machine and a personal computer?
A. 5.2%
B. 91%
C. 52%
D. 9.1%
E. 10% 126. In a recent survey of homes in a major Midwestern city, 10% of the homes have a fax
machine and 52% have a personal computer. Suppose 91% of the homes with a fax machine
also have a personal computer.
What is the probability that a home has a fax machine or a personal computer?
A. .62
B. .52
C. .53
D. .91
E. .09 1270 Chapter 01  An Introduction to Business Statistics 127. In a recent survey of homes in a major Midwestern city, 10% of the homes have a fax
machine and 52% have a personal computer. Suppose 91% of the homes with a fax machine
also have a personal computer.
What is the probability that a home with a personal computer has a fax machine?
A. .91
B. .52
C. .10
D. .19
E. .17 128. In a recent survey of homes in a major Midwestern city, 10% of the homes have a fax
machine and 52% have a personal computer. Suppose 91% of the homes with a fax machine
also have a personal computer.
Are the events "owning a fax machine" and "owning a personal computer" independent?
A. Yes, independent
B. No, not independent 129. A batch of 50 parts contains 6 defects. If two parts are drawn randomly one at a time
without replacement, what is the probability that both parts are defective?
A. 0.014
B. 0.012
C. 0.120
D. 0.102
E. 0.222 130. A batch of 50 parts contains 6 defects. If two parts are drawn randomly, one at a time
with replacement, what is the probability that both parts are defective?
A. 0.014
B. 0.012
C. 0.120
D. 0.102
E. 0.222 1271 Chapter 01  An Introduction to Business Statistics 131. In the word BUSINESS, what is the probability of randomly selecting the letter S?
A. 2/8
B. 1/8
C. 3/8
D. 5/8 132. Suppose that you believe that the probability you will get a grade of B or better in
Introduction to Finance is .6, and the probability that you will get a grade of B or better in
Introduction to Accounting is .5. If these events are independent, what is the probability that
you will get a grade of B or better in both courses?
A. 0.300
B. 0.833
C. 0.600
D. 0.500
E. 0.800 133. In a major Midwestern university, 55% of all undergraduates are female, 25% belong to
a Greek organization (fraternity or sorority) and 40% of all males belong to a Greek
organization.
What percent of the undergraduates are female and in a Greek organization?
A. 55%
B. 25%
C. 60%
D. 7%
E. 15% 134. In a major Midwestern university, 55% of all undergraduates are female, 25% belong to
a Greek organization (fraternity or sorority) and 40% of all males belong to a Greek
organization.
What is the probability that one randomly selected undergraduate will be either a female or
belong to a Greek organization?
A. .55
B. .73
C. .80
D. .07
E. .87 1272 Chapter 01  An Introduction to Business Statistics 135. In a major Midwestern university, 55% of all undergraduates are female, 25% belong to
a Greek organization (fraternity or sorority) and 40% of all males belong to a Greek
organization.
What is the probability that an undergraduate is in a Greek organization given that the
undergraduate is a female?
A. .07
B. .55
C. .127
D. .039
E. 138 136. In a major Midwestern university, 55% of all undergraduates are female, 25% belong to
a Greek organization (fraternity or sorority) and 40% of all males belong to a Greek
organization.
Are the events "female/not female" and "belongs to a Greek organization" independent?
A. Yes, independent
B. No, not independent 137. At a certain university, 30% of the students major in zoology. Of the students majoring
in zoology, 60% are males. Of all the students at the university, 70% are males.
What percentage of the students are males majoring in zoology?
A. 60%
B. 42%
C. 12%
D. 18%
E. 70% 138. At a certain university, 30% of the students major in zoology. Of the students majoring
in zoology, 60% are males. Of all the students at the university, 70% are males.
What is the probability that one randomly selected student is a male or is majoring in
zoology?
A. 1.00
B. 0.60
C....
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