11. A researcher claims that at least 15% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 250 helmets revealed that 20 helmets contained such defects. Construct a 95% confidence interval for the true proportion of the defect helmets. Based on the answer, are you 95% confident that the researcher claim is true? Why?

11. A researcher claims that at least 15% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 250 helmets revealed that 20 helmets contained such defects. Construct a 95% confidence interval for the true proportion of the defect helmets. Based on the answer, are you 95% confident that the researcher claim is true? Why?

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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