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Question 10.SP.6: To obtain the estimate of time a worker is busy for a work s...

To obtain the estimate of time a worker is busy for a work sampling study, a manager divides a typical workday into 480 minutes. Using a random-number table to decide what time to go to an area to sample work occurrences, the manager records observations on a tally sheet like the following in Figure 10.SP.6a:

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