A company has just purchased a new billboard near the freeway. Sales for the past 10 days
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A company has just purchased a new billboard near the freeway. Sales for the past 10 days have been 483, 532, 444, 510, 467, 461, 450, 444, 540, and 499. Build a 95% two-sided confidence interval on sales. Is there any evidence that the billboard has increased sales from its previous average of 475 per day?
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Since 475 is within the confidence interval there is no ev…View the full answer
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Related Book For
Managing Controlling and Improving Quality
ISBN: 978-0471697916
1st edition
Authors: Douglas C. Montgomery, Cheryl L. Jennings, Michele E. Pfund
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