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Unformatted text preview: t issue at ACME company which manufactures light bulbs.
In order to conduct testing of the life hours of their light bulbs, they randomly sampled nine
light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375, 368,
321
What is the 90th percentile?
A. 335.5
B. 370.5
C. 380.6
D. 296.8
E. 375 105. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What is the third quartile?
A. 335.5
B. 370.5
C. 380.6
D. 296.8
E. 375 1143 Chapter 01  An Introduction to Business Statistics 106. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What is the first quartile?
A. 335.5
B. 370.5
C. 380.6
D. 296.8
E. 375 107. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What is the 10th percentile?
A. 335.5
B. 370.5
C. 380.6
D. 296.8
E. 375 108. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What is the 65th percentile?
A. 335.5
B. 370.5
C. 380.6
D. 296.8
E. 375 1144 Chapter 01  An Introduction to Business Statistics 109. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What is the IQR?
A. 41
B. 22
C. 61.50
D. 191
E. 82 110. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What are the inner fences?
A. 274.0, 438.0
B. 212.5, 499.5
C. 397.0, 438.0
D. 458.5, 499.5
E. 61.5, 123.0 111. Quality control is an important issue at ACME Company which manufactures light
bulbs. In order to conduct testing of the life hours of their light bulbs, they randomly sampled
nine light bulbs and measured how many hours they lasted. 378, 361, 350, 375, 200, 391, 375,
368, 321
What are the outer fences?
A. 274.0, 438.0
B. 212.5, 499.5
C. 397.0, 438.0
D. 458.5, 499.5
E. 61.5, 123.0 1145 Chapter 01  An Introduction to Business Statistics 112. In a survey of 550 randomlyselected college statistic students were surveyed on their
impressions of their course, instructor and textbook. The results are as follows: Compute a point estimate of the proportion of all college statistic students who think their
instructor was "very effective"
A. 0.136
B. 0.536
C. 0.182
D. 0.280
E. 0.014 1146 Chapter 01  An Introduction to Business Statistics 113. In a survey of 550 randomlyselected college statistic students were surveyed on their
impressions of their course, instructor and textbook. The results are as follows: Compute a point estimate of the proportion of all college statistic students who feel their
textbook is not "easy" or "very easy"
A. 0.189
B. 0.811
C. 0.009
D. 0.656
E. 0.151 1147 Chapter 01  An Introduction to Business Statistics 114. In a survey of 550 randomlyselected college statistic students were surveyed on their
impressions of their course, instructor and textbook. The results are as follows: Compute a point estimate of the proportion of all college statistic students who think the
quality of the course was "fair"
A. 0.251
B. 0.620
C. 0.129
D. 0.871
E. 0.340 1148 Chapter 01  An Introduction to Business Statistics 115. In a survey of 550 randomlyselected college statistic students were surveyed on their
impressions of their course, instructor and textbook. The results are as follows: Compute a point estimate of the proportion of all college statistic students who think that they
had a "very ineffective" or "extremely ineffective" instructor
A. 0.282
B. 0.136
C. 0.182
D. 0.280
E. 0.464 1149 Chapter 01  An Introduction to Business Statistics 116. In a survey of 550 randomlyselected college statistic students were surveyed on their
impressions of their course, instructor and textbook. The results are as follows: Of the students who thought their textbook was very hard to read, 50 also thought that the
quality...
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 Winter '14

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