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Author Question: In a preliminary work sample of an operation, out of 50 observations the operator was observed idle ... (Read 2518 times)

s.tung

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Question 1

A work sampling study requires an acceptable error level of 10% and 95% confidence. a. What is the adequate sample size if the sample proportion is as large as 50%? b. What is the adequate sample size if the sample proportion is estimated to be about 20%?

Question 2

In a preliminary work sample of an operation, out of 50 observations the operator was observed idle in 5 observations. What sample size is required for a work sampling study if the desired confidence level is 98% and the desired accuracy level is 5%?


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Marked as best answer by s.tung on Dec 3, 2019

ladyjames123

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