1) The data in the following table represent time-study observations on a new operation with three work elements. On the basis of these observations, find the standard time for the process. Assume an 8% allowance factor.
|
|
|
Observations (times in seconds)
|
|
Element
|
Performance Rating
|
1
|
2
|
3
|
4
|
|
1
|
105%
|
110.2
|
110.8
|
112.3
|
108.7
|
|
2
|
90%
|
114.7
|
115.7
|
114.8
|
114.2
|
|
3
|
115%
|
109.2
|
109.3
|
109.2
|
108.9
|
2) Joe's Manufacturing is considering bidding on a small order for 5 units. Based on similar products that they have made in the past, they believe that the first unit will take 500 labor hours. They also believe that there will be an 80% learning rate. How many hours of labor should Joe include for his bid?
3) A firm is about to undertake the manufacture of a labor-intensive electronics component. The first unit took 300 hours. The manager is not sure whether the learning rate is 70% or 80%. The initial phase of the contract calls for 6 of these components.
a. How much time will it take to complete all six at 70% learning?
b. How much time will it take to complete all six at 80% learning?