One Division of a Large Defense Contractor Manufactures Telecommunication Equipment

Multiple Choice

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?

A) The percentage of electronic components that are reworked is between 7.6% and
B) We are 95% confident that between 7.6% and 13.4% of electrical components are
C) The margin of error for the true percentage of electrical components that are
D) All samples of size 450 will yield a percentage of reworked electrical components
E) None of the above.