Lockheed Martin, a large defense contractor, manufactures equipment for the mili

Question

Lockheed Martin, a large defense contractor, manufactures equipment for the military. This division reports that 13% of non-electrical components are reworked. A quality auditor wants to determine if this percentage is the same as the percentage rework for the company’s electrical components. The quality department plans to check a random sample of the over 10,0000 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?

The percentage of components that are reworked is between 7.6% and 13.4%.

The margin of error for the true percentage of components that are reworked is between 7.6% and 13.4%

We are 95% confident that between 7.6% and 13.4% of components are reworked.

All samples of size 550 will yield a percentage of reworked components that fall within 7.6% and 13.4%.

The percentage of components that are reworked is between 7.6% and 13.4%.

The margin of error for the true percentage of components that are reworked is between 7.6% and 13.4%

We are 95% confident that between 7.6% and 13.4% of components are reworked.

All samples of size 550 will yield a percentage of reworked components that fall within 7.6% and 13.4%.

Explanation / Answer

Ans : We are 95% confident that between 7.6% and 13.4% of components are reworked.   

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