Find and interpret the confidence interval.
-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 reworked.
C) The margin of error for the true percentage of electrical components that are reworked is between 7.6% and 13.4%.
D) All samples of size 450 will yield a percentage of reworked electrical components that falls within 7.6% and 13.4%.
E) None of the above.
Correct Answer:
Verified
Q13: Are the assumptions and conditions for constructing
Q18: Find the sample size.
-The U.S. Department of
Q20: Should representatives from the Department of Labor
Q21: Find the sample size.
-The Quality Control Department
Q22: Find and interpret the confidence interval.
-One division
Q23: Find the sample size.
-The unemployment rate of
Q24: Find the sample size.
-The unemployment rate of
Q25: Find and interpret the margin of error.
-A
Q27: Find and interpret the confidence interval.
-Recent statistics
Q28: Find and interpret the confidence interval.
-One division
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