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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi
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The article “Effects of Waste Glass Additions on the

Chapter 5, Problem 15E

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QUESTION:

The article “Effects of Waste Glass Additions on the Properties and Durability of Fired Clay Brick” (S. Chidiac and L. Federico, Can J Civ Eng, 2007: 1458–1466) reports that the average initial rate of absorption (in \(\mathrm{g} / \mathrm{min} \cdot \mathrm{cm}^{2}\)) for a sample of five clay bricks with fine glass particles added was 1299.8 with a standard deviation of 329.8, and the average for a sample of five bricks without glass particles added was 4500.8 with a standard deviation of 271.6. Find a 98% confidence interval for the difference between the mean initial absorption rates.

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QUESTION:

The article “Effects of Waste Glass Additions on the Properties and Durability of Fired Clay Brick” (S. Chidiac and L. Federico, Can J Civ Eng, 2007: 1458–1466) reports that the average initial rate of absorption (in \(\mathrm{g} / \mathrm{min} \cdot \mathrm{cm}^{2}\)) for a sample of five clay bricks with fine glass particles added was 1299.8 with a standard deviation of 329.8, and the average for a sample of five bricks without glass particles added was 4500.8 with a standard deviation of 271.6. Find a 98% confidence interval for the difference between the mean initial absorption rates.

ANSWER:

Q:The article “Effects of Waste Glass Additions on the Properties and Durability of Fired ClayBrick” (S. Chidiac and L. Federico, Can J Civ Eng, 2007: 1458-1466) reports that the averageinitial rate of absorption (in g/min cm2) for a sample of five clay bricks with fine glass particlesadded was 1299.8 with a standard deviation of 329.8, and the average for a sample of five brickswithout added glass particles added was 4500.8 with a standard deviation of 271.6. Find a 98%confidence interval for the difference between the mean initial absorption rates. Step By Step SolutionStep 1 of 3:The given data:With added fine glass particles:Without added fine glass powder:

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