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Get Full Access to Probability And Statistics For Engineering And The Sciences - 9 Edition - Chapter 9.2 - Problem 30
Get Full Access to Probability And Statistics For Engineering And The Sciences - 9 Edition - Chapter 9.2 - Problem 30

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# The article Flexure of Concrete Beams Reinforcedwith Advanced Composite Orthogrids (J ISBN: 9781305251809 122

## Solution for problem 30 Chapter 9.2

Probability and Statistics for Engineering and the Sciences | 9th Edition

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Problem 30

The article Flexure of Concrete Beams Reinforcedwith Advanced Composite Orthogrids (J. of AerospaceEngr., 1997: 715) gave the accompanying data on ultimateload (kN) for two different types of beams.Sample Sample SampleType Size Mean SDFiberglass grid 26 33.4 2.2Commercial 26 42.8 4.3carbon grida. Assuming that the underlying distributions are normal,calculate and interpret a 99% CI for the differencebetween true average load for the fiberglassbeams and that for the carbon beams.b. Does the upper limit of the interval you calculated inpart (a) give a 99% upper confidence bound for thedifference between the two ms? If not, calculatesuch a bound. Does it strongly suggest that true averageload for the carbon beams is more than that forthe fiberglass beams? Explain.

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##### ISBN: 9781305251809

This textbook survival guide was created for the textbook: Probability and Statistics for Engineering and the Sciences, edition: 9. Probability and Statistics for Engineering and the Sciences was written by and is associated to the ISBN: 9781305251809. This full solution covers the following key subjects: . This expansive textbook survival guide covers 88 chapters, and 2432 solutions. The full step-by-step solution to problem: 30 from chapter: 9.2 was answered by , our top Statistics solution expert on 11/08/17, 04:06AM. Since the solution to 30 from 9.2 chapter was answered, more than 218 students have viewed the full step-by-step answer. The answer to “The article Flexure of Concrete Beams Reinforcedwith Advanced Composite Orthogrids (J. of AerospaceEngr., 1997: 715) gave the accompanying data on ultimateload (kN) for two different types of beams.Sample Sample SampleType Size Mean SDFiberglass grid 26 33.4 2.2Commercial 26 42.8 4.3carbon grida. Assuming that the underlying distributions are normal,calculate and interpret a 99% CI for the differencebetween true average load for the fiberglassbeams and that for the carbon beams.b. Does the upper limit of the interval you calculated inpart (a) give a 99% upper confidence bound for thedifference between the two ms? If not, calculatesuch a bound. Does it strongly suggest that true averageload for the carbon beams is more than that forthe fiberglass beams? Explain.” is broken down into a number of easy to follow steps, and 115 words.

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