10.32 Supervisor Kenneth Peterson wants to determine the percentage of time a machine in his area is...

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• • 10.32 Supervisor Kenneth Peterson wants to determine the percentage 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 Peterson take to be 98%

confident that the results will be less than 5% from the true results?

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