Question 6 One division of a large defense contractor manufactures telecommunica

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Question 6 One division of a large defense contractor manufactures telecommunication equipment for the military. This division reports that 12% of non-electrical components are reworked. Management wants to determine if this percentage is the same as the percentage rework for the company's electrical components. The Quality Control Department plans to check a random sample of the over 10,000 electrical components manufactured across all divisions. The resulting 95% confidence interval based on these data is 0758 to 1339 Which of the following is the correct interpretation? O The margin of error for the true percentage of electrical components that are reworked is between 7.6% and 13.4% O All samples of size 450 will yield a percentage of reworked electrical components that falls within 7.6% and 13.4% The percentage of electronic components that are reworked is between 7.6% and 13.4%. We are 95% confident that between 7.6% and 13.4% of electrical components are reworked.

Explanation / Answer

Since , the 95% confidence interval for the propertion of the reworked component is ( 0.0758 , 0.1339 )

Interpretation : Hence , we are 95% confident that between 7.6% and 13.4% of electrical components are reworked.

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