The Owens Corning company wishes to estimate the mean heat loss of its 4x1commercial grade fiberglass pipe insulation when the pipe is operating at 300 F.What sample size should they use in their study, if they wish to keep their margin oferror to no more than 0.75 F at a 95% level of confidence? Assume that thestandard deviation for heat loss for this material under these conditions is at most2.0 F.n = 300On = 28On = 196%3Dn = 75

Answered: Image /qna-images/answer/715f9c2a-18f9-4a29-bfc2-544b7552325b.jpg

Answered: The Owens Corning company wishes to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The specific gravities of a simple random sample of 91 samples of a particular wort has a mean x ̄ = 1.05 platos and a standard deviation sx = 0.16 platos. Use a 0.05 significance level to test the claim that the mean specific gravity of this wort is less than 1.10.
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Acrylic bone cement is sometimes used in hip and knee replacements to fix an artificial joint in place. The force required to break an acrylic bone cement bond was measured for eight specimens under specified conditions, and the resulting mean and standard deviation were 306.11 newtons and 41.94 newtons, respectively. Assuming that it is reasonable to believe that breaking force under these conditions has a distribution that is approximately normal, estimate the mean breaking force for acrylic bone cement under the specified conditions using a 95% confidence interval. (Use a table or technology. Round your answers to three decimal places.) n USE SALT

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