Question 1

A time study is a statistical sample distribution, where the number of cycles is the sample size.

Accepted Answer

A) True 
 B)False  True

Question 2

A work sampling study is being conducted on a loading machine in a warehouse. How many observations should be taken if management wants to be 95% confident the estimate is within + 6% of the actual proportion of time the loader is busy if management believes the loading machine is in use 70% of the time?

Accepted Answer

A)  125 observations 
B)  175 observations 
C)  225 observations 
D)  275 observations 
A)  125 observations 
B)  175 observations 
C)  225 observations 
D)  275 observations C

Question 3

Work sampling is a technique for determining the proportion of time a worker or machine is idle.

Accepted Answer

A) True 
 B)False  False

Question 4

Determining the length of time it takes to do a job is known as work measurement.

Accepted Answer

A) True 
 B)False

Question 5

As part of its quality-improvement program a company is conducting a time study for a particular job. The time study encompassed 10 job cycles, and the results include the following cumulative times and performance rating factors for each element. An allowance factor of 16% is assumed.   The normal cycle time for this job would be

Accepted Answer

A)  1.809 minutes. 
B)  2.098 minutes. 
C)  1.530 minutes. 
D)  2.233 minutes. 
A)  1.809 minutes. 
B)  2.098 minutes. 
C)  1.530 minutes. 
D)  2.233 minutes.

Question 6

The historical objective behind work measurements and time studies was to develop a fair method of job evaluation and payment.

Accepted Answer

A) True 
 B)False

Question 7

_____________ time is the time required by an average worker to perform a job under normal circumstances and conditions.

Accepted Answer

A)  Stopwatch 
B)  Standard 
C)  Allowance 
D)  Average 
A)  Stopwatch 
B)  Standard 
C)  Allowance 
D)  Average

Question 8

Management believes a critical piece of equipment is busy 85% of the time. How many observations should be taken if management wants to be 98% confident the estimate is within + 2.5% of the actual proportion of time the equipment is in use?

Accepted Answer

A)  250 observations 
B)  525 observations 
C)  757 observations 
D)  1,108 observations 
A)  250 observations 
B)  525 observations 
C)  757 observations 
D)  1,108 observations

Question 9

How many cycles should be used in a time study in order to be 95% confident that the time-study average job cycle time is within 5% of the true average job cycle time? Assume that the average job cycle time is 2.67 minutes, and the standard deviation of the sample is 0.72 minutes.

Accepted Answer

A)  36 cycles 
B)  72 cycles 
C)  98 cycles 
D)  112 cycles 
A)  36 cycles 
B)  72 cycles 
C)  98 cycles 
D)  112 cycles

Question 10

As part of its quality-improvement program a company is conducting a time study for a particular job. The time study encompassed 10 job cycles, and the results include the following cumulative times and performance rating factors for each element.   The standard time for this job using an allowance factor of 16% is

Accepted Answer

A)  1.809 minutes. 
B)  2.098 minutes. 
C)  1.530 minutes. 
D)  2.233 minutes. 
A)  1.809 minutes. 
B)  2.098 minutes. 
C)  1.530 minutes. 
D)  2.233 minutes.

Question 11

For a particular time study a company would like to be 90% confident that the average job cycle time is within 5% of the true average job cycle time. Assume that the average job cycle time is 15.76 minutes and the standard deviation of the sample is 3.2 minutes. The number of cycles that should be used in this time study would be

Accepted Answer

A)  45. 
B)  93. 
C)  127. 
D)  236. 
A)  45. 
B)  93. 
C)  127. 
D)  236.

Question 12

The basic principle underlying an incentive piece-rate wage system is that workers produce more if they are paid for the additional output.

Accepted Answer

A) True 
 B)False

Question 13

The normal time to perform a job is calculated by dividing the elemental average by the standard time.

Accepted Answer

A) True 
 B)False

Question 14

In a time study the standard time is calculated as

Accepted Answer

A)  the normal cycle time plus the allowance factor. 
B)  the normal cycle time minus the allowance factor. 
C)  the normal cycle time divided by (1 + allowance factor). 
D)  the normal cycle time multiplied by (1 + allowance factor). 
A)  the normal cycle time plus the allowance factor. 
B)  the normal cycle time minus the allowance factor. 
C)  the normal cycle time divided by (1 + allowance factor). 
D)  the normal cycle time multiplied by (1 + allowance factor).

Question 15

Rating worker performance is typically an objective, easy task that can be done by any employee.

Accepted Answer

A) True 
 B)False

Question 16

Workers often do not like to be the subject of a time study, and are sometimes unwilling to cooperate.

Accepted Answer

A) True 
 B)False

Question 17

In a time study, the normal time is computed as

Accepted Answer

A)  the elemental average time multiplied by the rating factor. 
B)  the elemental average time divided by the rating factor. 
C)  the elemental average time minus the rating factor. 
D)  the elemental average time plus the rating factor. 
A)  the elemental average time multiplied by the rating factor. 
B)  the elemental average time divided by the rating factor. 
C)  the elemental average time minus the rating factor. 
D)  the elemental average time plus the rating factor.

Question 18

How many observations should be taken to be 90% confident of being within + 2% of the actual time a machine is busy if it is believed that the machine is in use 70% of the time?

Accepted Answer

A)  2,021 observations 
B)  1,421 observations 
C)  789 observations 
D)  365 observations 
A)  2,021 observations 
B)  1,421 observations 
C)  789 observations 
D)  365 observations

Question 19

How many observations should be taken to be 95% confident of being within + 5% of the actual time a machine is busy if it is believed that the machine is in use 75% of the time?

Accepted Answer

A)  1,200 observations 
B)  772 observations 
C)  364 observations 
D)  289 observations 
A)  1,200 observations 
B)  772 observations 
C)  364 observations 
D)  289 observations

Question 20

Advantages of using a predetermined motion time system include all of the following except

Accepted Answer

A)  worker cooperation and compliance are not required. 
B)  ignores job context within which a single motion takes place. 
C)  workplace is not disrupted. 
D)  eliminates the need for subjectively determining performance ratings. 
A)  worker cooperation and compliance are not required. 
B)  ignores job context within which a single motion takes place. 
C)  workplace is not disrupted. 
D)  eliminates the need for subjectively determining performance ratings.

A time study is a statistical sample distribution, where the number of cycles is the sample size.

Work sampling is a technique for determining the proportion of time a worker or machine is idle.

Determining the length of time it takes to do a job is known as work measurement.

The historical objective behind work measurements and time studies was to develop a fair method of job evaluation and payment.

_____________ time is the time required by an average worker to perform a job under normal circumstances and conditions.

Management believes a critical piece of equipment is busy 85% of the time. How many observations should be taken if management wants to be 98% confident the estimate is within + 2.5% of the actual proportion of time the equipment is in use?

How many cycles should be used in a time study in order to be 95% confident that the time-study average job cycle time is within 5% of the true average job cycle time? Assume that the average job cycle time is 2.67 minutes, and the standard deviation of the sample is 0.72 minutes.

The basic principle underlying an incentive piece-rate wage system is that workers produce more if they are paid for the additional output.

The normal time to perform a job is calculated by dividing the elemental average by the standard time.

In a time study the standard time is calculated as

Rating worker performance is typically an objective, easy task that can be done by any employee.

Workers often do not like to be the subject of a time study, and are sometimes unwilling to cooperate.

In a time study, the normal time is computed as

How many observations should be taken to be 90% confident of being within + 2% of the actual time a machine is busy if it is believed that the machine is in use 70% of the time?

How many observations should be taken to be 95% confident of being within + 5% of the actual time a machine is busy if it is believed that the machine is in use 75% of the time?

Advantages of using a predetermined motion time system include all of the following except

Introduction to Operations and Supply Chain Management

Quality Management

Statistical Process Control

Product Design

Service Design

Processes and Technology

Capacity and Facilities Design

Human Resources

Project Management

Supply Chain Management Strategy and Design

Global Supply Chain Procurement and Distribution

Forecasting

Inventory Management

Sales and Operations Planning

Resource Planning

Lean Systems

Operational Decision-Making Tools: Decision Analysis

Operational Decision-Making Tools: Acceptance Sampling

Operational Decision-Making Tools: Facility Location Models

Operational Decison-Making Tools: Transportation and Transshipment Models

Operational Decision-Making Tools: Simulation

Operational Decision-Making Tools: Linear Programming

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Exam 20: Operational Decision-Making Tools: Work Measurement

A time study is a statistical sample distribution, where the number of cycles is the sample size.

Work sampling is a technique for determining the proportion of time a worker or machine is idle.

Determining the length of time it takes to do a job is known as work measurement.

The historical objective behind work measurements and time studies was to develop a fair method of job evaluation and payment.

_____________ time is the time required by an average worker to perform a job under normal circumstances and conditions.

Management believes a critical piece of equipment is busy 85% of the time. How many observations should be taken if management wants to be 98% confident the estimate is within + 2.5% of the actual proportion of time the equipment is in use?

How many cycles should be used in a time study in order to be 95% confident that the time-study average job cycle time is within 5% of the true average job cycle time? Assume that the average job cycle time is 2.67 minutes, and the standard deviation of the sample is 0.72 minutes.

The basic principle underlying an incentive piece-rate wage system is that workers produce more if they are paid for the additional output.

The normal time to perform a job is calculated by dividing the elemental average by the standard time.

In a time study the standard time is calculated as

Rating worker performance is typically an objective, easy task that can be done by any employee.

Workers often do not like to be the subject of a time study, and are sometimes unwilling to cooperate.

In a time study, the normal time is computed as

How many observations should be taken to be 90% confident of being within + 2% of the actual time a machine is busy if it is believed that the machine is in use 70% of the time?

How many observations should be taken to be 95% confident of being within + 5% of the actual time a machine is busy if it is believed that the machine is in use 75% of the time?

Advantages of using a predetermined motion time system include all of the following except

Introduction to Operations and Supply Chain Management

Quality Management

Statistical Process Control

Product Design

Service Design

Processes and Technology

Capacity and Facilities Design

Human Resources

Project Management

Supply Chain Management Strategy and Design

Global Supply Chain Procurement and Distribution

Forecasting

Inventory Management

Sales and Operations Planning

Resource Planning

Lean Systems

Operational Decision-Making Tools: Decision Analysis

Operational Decision-Making Tools: Acceptance Sampling

Operational Decision-Making Tools: Facility Location Models

Operational Decison-Making Tools: Transportation and Transshipment Models

Operational Decision-Making Tools: Simulation

Operational Decision-Making Tools: Linear Programming

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