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A total of 300 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour..

A total of 300 observations of Bob Ramos, an assembly-line worker, were made over a 40-hour workweek. The sample also showed that Bob was busy working (assembling the parts) during 250 observations.

a) Find the percentage of time Bob was working.

b) If you want a confidence level of 95%, and if ±3% is an acceptable error, what size should the sample be?

c) Was the sample size adequate?

 

Jul 30 2020 View more View Less

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