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Productivity,Time Study, Allowance Fraction & Labor Std

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Problem 1:
A time study is performed on an operation, resulting in the data following (in minutes).
Cycle
Element 1 2 3 4 5 6 7 8 Performance Rating
1. Get and position unit 0.22 0.27 0.19 0.24 0.17 0.24 0.21 0.18 1.10
2. Perform calibration 2.20 2.70 2.50 3.10 2.80 2.40 3.20 2.70 1.30
3. Perform standard tests 4.60 4.00 4.50 3.80 4.30 4.50 3.90 4.40 0.85
4. Update card and remove unit 0.50 0.50 0.70 0.60 0.80 0.40 0.50 0.60 1.20

Allowance per Eight-Hour Shift:
Clothes change 15 minutes
Unavoidable delay 35 minutes
Lunch 30 minutes
Shower and change 30 minutes
Total 110 Minutes
a. Compute the mean observed time for each element in minutes.
b. Compute the normal time for each element and total normal time in minutes.
c. Compute the allowance fraction for the operation. Assume 480 minutes per shift.
d. Compute the labor standard for the operation.

Problem 2:
A work-sampling study was conducted of an assembly operation. The results of the study are:
Activity Number of Observations
Assemble products 85%
Allowances 15

If the workers who were performing the operation during the study each produced an average of 100 products per eight-hour shift and received a performance rating of 1.15, what is the labor standard per product?

Problem 3:
It takes a manufacturer 120 hours to produce the first product in a batch of 15 products, and a 75 percent learning rate is expected.
a. Estimate the time it will take to produce the fourth product.
b. Estimate the total time it will take to produce the entire batch

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This posting contains solution to following problems on Productivity in Manufacturing : Time Study, Allowance Fraction and Labor Standard.

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