Exam 21: Operational Decision-Making Tools: Work Measurement

Explore all topics

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?

(Multiple Choice)

4.8/5

(38)

Question 21

In a time study,the normal time is computed as

(Multiple Choice)

4.8/5

(37)

Question 22

Under normal circumstances and conditions,the time required by an "average" worker to perform a job once is referred to as the cycle time.

(True/False)

4.8/5

(41)

Question 23

Briefly discuss the advantages and disadvantages of a predetermined motion time system.

(Essay)

4.7/5

(28)

Question 24

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?

(Multiple Choice)

4.9/5

(29)

Question 25

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?

(Multiple Choice)

4.9/5

(42)

Question 26

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 was 15.76 minutes and the standard deviation of the sample was 3.2 minutes.The number of cycles that should be used in this time study would be

(Multiple Choice)

4.9/5

(32)

Question 27

Work sampling tends to be more disruptive on the workplace than time studies.

(True/False)

5.0/5

(35)

Question 28

In a time study the standard time is calculated as

(Multiple Choice)

4.8/5

(37)

Question 29

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

(True/False)

4.9/5

(37)

Question 30

For a particular time study a company would like to be 95% confident that the average job cycle time is within 2% of the true average job cycle time.Assume that the average job cycle time was 6.53 minutes and the standard deviation of the sample was 1.26 minutes.The number of cycles that should be used in this time study would be

(Multiple Choice)

5.0/5

(35)

Question 31

Showing 21 - 31 of 31

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?

In a time study,the normal time is computed as

Under normal circumstances and conditions,the time required by an "average" worker to perform a job once is referred to as the cycle time.

Briefly discuss the advantages and disadvantages of a predetermined motion time system.

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?

Work sampling tends to be more disruptive on the workplace than time studies.

In a time study the standard time is calculated as

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

Operations Management

Quality Management

Statistical Quality Control

Product Design

Service Design

Processes and Technology

Scheduling

Capacity and Facilities

Human Resources

Project Management

Supply Chain Management: Strategy and Design

Global Supply Chain Procurement and Distribution

Forecasting

Inventory Management

Operational Decision-Making Tools: Simulation

Operational Decision-Making Tools: Linear Programming

The Sales and Operations Planning Process

Resource Planning

Lean Systems

Operational Decision-Making Tools: Decision Analysis

Operational Decision-Making Tools: Acceptance Sampling

Decision-Making Tools: Facility Location Models

Filters