Question 2The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicatedthat the standard deviation of breaking strength is o = 3 psi. A random sample of fourspecimens is tested. The results are yi=145, ½=153, y=150 and y4=147.(a) State the hypotheses that you think should be tested in this experiment.(b) Test these hypotheses using ¤ = 0.05. What are your conclusions?(c) Find the P-value for the test in part (b).(d) Construct a 95 percent confidence interval on the mean breaking strength.

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Description: Question 2The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicatedthat the standard deviation of breaking strength is o = 3 psi. A random sample of fourspecimens is tested. The results are yi=145, ½=153, y=1

Given, Sample size, n = 4 y1 = 145, y2 = 153, y3 = 150, y4 = 147 Standard deviation σ = 3

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Question 2 The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the standard deviation of breaking strength is o = 3 psi. A random sample of four specimens is tested. The results are y=145, ½=153, y½=150 and y4=147. (a) State the hypotheses that you think should be tested in this experiment. (b) Test these hypotheses using a = 0.05. What are your conclusions? (c) Find the Pvalue for the test in part (b). (d) Construct a 95 percent confidence interval on the mean breaking strength.

Question 2 The breaking strength of a fiber is required to be at least 150 psi. Past experience has indicated that the standard deviation of breaking strength is o = 3 psi. A random sample of four specimens is tested. The results are y=145, ½=153, y½=150 and y4=147. (a) State the hypotheses that you think should be tested in this experiment. (b) Test these hypotheses using a = 0.05. What are your conclusions? (c) Find the Pvalue for the test in part (b). (d) Construct a 95 percent confidence interval on the mean breaking strength.

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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