Question

In: Operations Management

1. If the learning curve for a process is 100 percent, the labor requirements in the...

1. If the learning curve for a process is 100 percent, the labor requirements in the company drop sharply. TRUE OR FALSE

2. If it took 1000 hours to produce the first unit of a product, and the learning curve is 70%, how long will it take to produce units 26 through 50?

Answer: ___________ hours (use whole number)

3. Under 80% learning rate, the improvement rate is _______ %

Solutions

Expert Solution

1. If learning curve of the process is 100 percent, then the time required to produce nth unit remains same as of the first unit. This means there is no improvement or no learning.

Y = aX^b

Y = cumulative time required to produce x units

a = time required to produce 1st unit

b = slope of the function or improvement rate

b = log (learning rate) / log 2 = log (1) / log (2) = 0/0.301= 0

now the equation is Y = aX^0 = a

As there is no learning, the time required to produce 1st unit is the time taken to produce nth unit. So, to produce any amount of units, we need that many times of number of labor required to produce 1st unit. Hence the labor requirement in the company increases sharply.

Answer is False.

2. a = 1000 hours, learning rate = 70%,

Y = aX^b

b = log (0.7)/log(2) = -0.51457

Y = 1000*26^(-0.51457) = 187 hours

Similarly the time can be calculated for units till 50.

units

time required for nth unit

cumulative till nth unit

26

187.0239

187.0239

27

183.427

370.4509

28

180.0263

550.4771

29

176.8047

727.2819

30

173.7472

901.029

31

170.8402

1071.869

32

168.0718

1239.941

33

165.4315

1405.373

34

162.9097

1568.282

35

160.4977

1728.78

36

158.188

1886.968

37

155.9734

2042.941

38

153.8476

2196.789

39

151.8049

2348.594

40

149.8401

2498.434

41

147.9482

2646.382

42

146.125

2792.507

43

144.3664

2936.874

44

142.6687

3079.542

45

141.0284

3220.571

46

139.4424

3360.013

47

137.9077

3497.921

48

136.4218

3634.342

49

134.982

3769.324

50

133.586

3902.91

So, to produce units 26 through 50, it would require 3903 hours

3. Under 80% learning rate, the improvement rate is b = log(0.8)/log(2) = -0.32193 or -32%


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