Question: A technician is conducting a work sampling study of a machine maintenance worker to determine the portion of time the worker spends in one particular

  1. A technician is conducting a work sampling study of a machine maintenance worker to determine the portion of time the worker spends in one particular department. Management has indicated that they believe that repairs in this department consume 50% of the maintenance workers time, and they want the estimate to be within +/- 5 percent of the true proportion, with 95% confidence level.

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