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Find the Sample Size

Question 9

Multiple Choice

Find the sample size.
-The Quality Control Department wants to estimate the true percentage of rework for
Electrical components to within ±4%, with 99% confidence. Based on similar past
Studies, the percentage of rework was found to be 12%. How many components should
They sample?


A) 651
B) 1000
C) 344
D) 438
E) 579

Correct Answer:

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