A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially
Question:
A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 16 helmets contained such defects.
(a) Does this finding support the researcher’s claim? Use α = 0.01. Find the P-value.
(b) Explain how the question in part (a) could be answered with a confidence interval.
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a The parameter of interest is the true percentage of football ...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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