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Exam 7: Extension: Learning Curves

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Question 1

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A job has an 80 percent learning curve. If the first unit took 50 hours to complete, the third unit should take roughly how many hours?

A) 40
B) 36
C) 35
D) 32
E) 10

F) B) and E)
G) A) and B)

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Question 2

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A company is preparing a bid on a government contract for 40 units of a certain product. The operations manager estimates the assembly time required for the first two units to be 10.4 hours and 8.8 hours. What is the average time per unit for the first 30 units?

A) 4.7 hours
B) 5.9 hours
C) 5.6 hours
D) 4.5 hours
E) 3.6 hours

F) None of the above
G) B) and D)

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Question 3

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To which worker would learning curves be most applicable?

A manager wants to analyze the learning curve associated with producing one of his company's products. Accordingly, he has gathered the following data: $\begin{array} { | l | l | } \hline \text { UNIT PRODUCED } & { \text { TIME REQUIRED } } \\\hline \text { Second } & 5 \text { hours } \\\hline \text { Fourth } & 4 \text { hours } \\\hline\end{array}$ What is the learning curve percentage?

A manager wants to analyze the learning curve associated with producing one of his company's products. Accordingly, he has gathered the following data: $\begin{array} { | l | l | } \hline \text { UNIT PRODUCED } &{ \text { TIME REQUIRED } } \\\hline \text { Second } & 5 \text { hours } \\\hline \text { Fourth } & 4 \text { hours } \\\hline\end{array}$ How long did it take to produce the first unit?

If the elapsed time for the task is short and the activity is somewhat routine, a modest amount of improvement occurs during the first few repetitions.

Which of the following is not a major caution or criticism of learning curves?

Which one of the following would learning curves probably affect the least?

A learning percentage of 95 percent indicates greater learning than a percentage of 90 percent.

Ron has noted that the first accounting problem he did in a set of similar problems took him one hour, and the ninth problem took 24 minutes. (A) Estimate Ron's learning curve. (B) About how long did it take Ron to do his set of 10 problems?

Developing work assignments in a job shop in a certain firm has a learning curve of 80 percent. If the second set of assignments takes 12 minutes, determine the length of time required for the following: (A) the fifth set. (B) sets 3, 4, and 5 together.

If an 80 percent curve is appropriate for a task and the first unit takes 10 hours, the average time for the first two units would be eight hours.

For an 80 percent learning curve, if the first unit requires 10 hours, the second unit will require 8 hours and the third 6.4 hours.

Sometimes improvements in labor requirements are more apparent than real because of:

How long would a job with a 70 percent learning curve and a time of 20 hours for the first unit require (approximately, in hours) for the third unit?

A company is preparing a bid on a government contract for 40 units of a certain product. The operations manager estimates the assembly time required for the first two units to be 10.4 hours and 8.8 hours. If a contract for 30 units is canceled after the first 20 units, approximately how much of the expected total direct labor will have been expended to that point?

A company is preparing a bid on a government contract for 40 units of a certain product. The operations manager estimates the assembly time required for the first two units to be 10.4 hours and 8.8 hours. Approximately how long will it take to produce the 15^th unit?

Learning curves are mostly relevant for complex, new activities that have not been done often.

Which of the following is an example of a carryover effect?

Suppose the first unit of output required 900 labor hours, and the second unit required only 810. At this rate, how many more units must be produced before labor requirements are less than 700 hours?