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# (In some of the exercises that follow, we must | Ch 9.4 - 3E ISBN: 9780321923271 41

## Solution for problem 3E Chapter 9.4

Probability and Statistical Inference | 9th Edition

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Problem 3E

(In some of the exercises that follow, we must make assumptions, such as normal distributions with equal variances.)

We wish to compare compressive strengths of concrete corresponding to a = 3 different drying methods (treatments). Concrete is mixed in batches that are just large enough to produce three cylinders. Although care is taken to achieve uniformity, we expect some variability among the b = 5 batches used to obtain the following compressive strengths (there is little reason to suspect interaction; hence, only one observation is taken in each cell): (a) Use the 5% significance level and test HA: α1 = α2 =α3 = 0 against all alternatives.

(b) Use the 5% significance level and test HB: β1 = β2 =β3 = β4 = β5 = 0 against all alternatives. (See Ledolter and Hogg in References.)

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##### ISBN: 9780321923271

This full solution covers the following key subjects: level, against, alternatives, use, test. This expansive textbook survival guide covers 59 chapters, and 1476 solutions. Probability and Statistical Inference was written by and is associated to the ISBN: 9780321923271. This textbook survival guide was created for the textbook: Probability and Statistical Inference , edition: 9. The answer to “(In some of the exercises that follow, we must make assumptions, such as normal distributions with equal variances.)We wish to compare compressive strengths of concrete corresponding to a = 3 different drying methods (treatments). Concrete is mixed in batches that are just large enough to produce three cylinders. Although care is taken to achieve uniformity, we expect some variability among the b = 5 batches used to obtain the following compressive strengths (there is little reason to suspect interaction; hence, only one observation is taken in each cell): (a) Use the 5% significance level and test HA: ?1 = ?2 =?3 = 0 against all alternatives.(b) Use the 5% significance level and test HB: ?1 = ?2 =?3 = ?4 = ?5 = 0 against all alternatives. (See Ledolter and Hogg in References.)” is broken down into a number of easy to follow steps, and 133 words. Since the solution to 3E from 9.4 chapter was answered, more than 270 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 3E from chapter: 9.4 was answered by , our top Statistics solution expert on 07/05/17, 04:50AM.

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