Acontractor intends to bid on installing 30 in-ground swimming pools. Because this will be a
new line of work for the contractor, he believes there will be a learning effect.After reviewing
time records from a similar type of activity, the contractor is convinced that an 85-percent
learning curve is appropriate. He estimates that the first pool will take his crew eight days to
install. How many days should the contractor schedule for: (LO2)
a. The first 10 pools?
b. The second 10 pools?
c. The final 10 pools?
P = 85%
T = 8 days
a. T 1 total t.f. 108 × 7.116 = 56.928 days
b. T ×1(total t.f. – 20tal t.f. ) 108 × (12.402 – 7.116)
= 42.288 days
c. T ×1(total t.f. –30otal t.f. )20 8 × (17.091 – 12.402)
= 37.512 days
Students in an operations management class have been assigned four similar homework
problems. One student took 50 minutes to complete the first problem.Assume that a 70-percent
learning curve is appropriate. How much time can this student plan to spend solving all the
remaining problems? (LO2)
T 1 50 min.
P = 70%
T 2 4 = ?
T = T × total t. f. = 50 × 2.758 = 137.9
1-4 1 4
T 2-4 = T - 4- T1= 137.9 – 50 = 87.9 min., or about 1 ½ hrs.
Afirm has a training program for a certain operation. The progress of trainees is carefully
monitored.An established standard requires a trainee to be able to complete the sixth repetition
of the operation in six hours or less. Those who are u