Supervisor Robert Hall wants to determine the percent of time a machine in his area is idle.
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Supervisor Robert Hall wants to determine the percent of time a machine in his area is idle. He decides to use work sampling, and his initial estimate is that the machine is idle 20% of the time. How many observations should Hall take to be 98% confident that the results will be less than 5% from the true results?
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Hemstone Ouma
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