Question: A work sampling study is being conducted on a loading machine in a warehouse. How many observations should be taken if management wants to be

A work sampling study is being conducted on a loading machine in a warehouse. How many observations should be taken if management wants to be 95% confident the estimate is within + 6% of the actual proportion of time the loader is busy if management believes the loading machine is in use 70% of the time?

Select one:

A. 125 observations

B. 275 observations

C. 225 observations

D. 175 observations

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