Question 1

The allowance factor is a percentage increase in the normal cycle time.

Accepted Answer

A) True 
 B)False

Question 2

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 3

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 4

How many cycles should be used in a time study in order to be 98% confident that the time-study average job cycle time is within 4% of the true average job cycle time? Assume that the average job cycle time is 4.25 minutes and the standard deviation of the sample is 0.65 minutes.

Accepted Answer

A) 55 cycles 
B) 70 cycles 
C) 80 cycles 
D) 95 cycles 
A) 55 cycles 
B) 70 cycles 
C) 80 cycles 
D) 95 cycles

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.   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 6

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).

The allowance factor is a percentage increase in the normal cycle time.

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?

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 98% confident that the time-study average job cycle time is within 4% of the true average job cycle time? Assume that the average job cycle time is 4.25 minutes and the standard deviation of the sample is 0.65 minutes.

In a time study the standard time is calculated as

Introduction to Operations and Supply Chain Management

Supplement Operational Decision-Making Tools: Decision Analysis

Quality Management

Statistical Process Control

Supplement Operational Decision-Making Tools: Acceptance Sampling

Product Design

Service Design

Processes and Technology

Capacity and Facilities

Supplement Operational Decision-Making Tools: Facility Location Models

Human Resources

Project Management

Supply Chain Management Strategy and Design

Global Supply Chain Procurement and Distribution

Supplement Operational Decision-Making Tools: Transportation and Transshipment Models

Forecasting

Inventory Management

Supplement Operational Decision-Making Tools: Simulation

Sales and Operations Planning

Supplement Operational Decision-Making Tools: Linear Programming

Enterprise Resource Planning

Lean Systems

Scheduling

Filters

Exam 12: Supplement Operational Decision-Making Tools: Work Measurement

The allowance factor is a percentage increase in the normal cycle time.

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?

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 98% confident that the time-study average job cycle time is within 4% of the true average job cycle time? Assume that the average job cycle time is 4.25 minutes and the standard deviation of the sample is 0.65 minutes.

In a time study the standard time is calculated as

Introduction to Operations and Supply Chain Management

Supplement Operational Decision-Making Tools: Decision Analysis

Quality Management

Statistical Process Control

Supplement Operational Decision-Making Tools: Acceptance Sampling

Product Design

Service Design

Processes and Technology

Capacity and Facilities

Supplement Operational Decision-Making Tools: Facility Location Models

Human Resources

Project Management

Supply Chain Management Strategy and Design

Global Supply Chain Procurement and Distribution

Supplement Operational Decision-Making Tools: Transportation and Transshipment Models

Forecasting

Inventory Management

Supplement Operational Decision-Making Tools: Simulation

Sales and Operations Planning

Supplement Operational Decision-Making Tools: Linear Programming

Enterprise Resource Planning

Lean Systems

Scheduling

Filters