Question: A worker is studied in a work sampling study for an 8 hours day. He produced a total output of 760 units during this time

A worker is studied in a work sampling study for

A worker is studied in a work sampling study for an 8 hours day. He produced a total output of 760 units during this time study. The Total number of observations is 125, and in 5 of them the operator was idle while in 120 he was working. The total allowances are 40%. The performance rating and their frequencies are as shown below: Performance Rating Frequency 100 25 120 40 80 25 110 30 Q1- what is the standard time of producing one unit? Q2- Assume a Confidence level of 95% and desired relative accuracy of +5%. Determine the number of observation required for the study

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