Question: 2- (20 points) An analyst made 30 observations for a work sampling study over 15 minutes on a work involving three elements, during which time

2- (20 points) An analyst made 30 observations for a work sampling study over 15 minutes on a work involving three elements, during which time 12 units were produced. Table shows the data and the relevant performance rates; a) (15%) Assuming that number of observations are sufficient calculate the normal times for each element b) (5%) Assuming a constant 10% pfd allowance for all elements, find the standard time of this task PERFORMANCE RATING OBSERVED Element 1 90 Element 2 Element 3 Idle 110 95 100 100 105 90 110 85 95 90 100 95 Observation number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 80 110 105 90 100 85 90 90 110 100 95 105 100 110 110

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