1-20chapter stats

The times recorded were as follows in minutes 118 124

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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 1-143 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 1-144 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 1-145 Chapter 01 - An Introduction to Business Statistics 112. In a survey of 550 randomly-selected 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 1-146 Chapter 01 - An Introduction to Business Statistics 113. In a survey of 550 randomly-selected 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 1-147 Chapter 01 - An Introduction to Business Statistics 114. In a survey of 550 randomly-selected 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 1-148 Chapter 01 - An Introduction to Business Statistics 115. In a survey of 550 randomly-selected 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 1-149 Chapter 01 - An Introduction to Business Statistics 116. In a survey of 550 randomly-selected 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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