What are the upper and lower confidence limits

Reference no: EM131405370

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?

Reference no: EM131405370

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