Question: In a work-sampling study, an industrial engineer has observed the activities of a clerical worker on 121 randomly selected times during a workweek. On 32

In a work-sampling study, an industrial engineer has observed the activities of a clerical worker on 121 randomly selected times during a workweek. On 32 of these occasions, the employee was talking on the telephone. For an 8-hour day, what are the upper and lower 95% confidence limits for the number of minutes this employee talks on the phone?

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For a confidence level of 95 z 196 The sample proportion is p 32121 0... View full answer

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