Scenario 2.5
A job consists of three distinct work elements that were timed with a highly accurate Swiss watch by a trained industrial engineer wearing a pristine white lab jacket and carrying an official-looking clipboard.Worker ratings were less inflated by the newness of the job elements to the worker than by the overall nervousness of the worker.The engineer recorded ten observations and assigned the performance rating that is recorded in the bottom row of the table under the corresponding work element.All recorded times are in seconds.

-Use the data in Scenario 2.5 to answer this question.If the rating factor is 15%,what is the normal process time?
A)109.27 seconds
B)82.62 seconds
C)100.63 seconds
D)95.02 seconds

Question

Scenario 2.5
A job consists of three distinct work elements that were timed with a highly accurate Swiss watch by a trained industrial engineer wearing a pristine white lab jacket and carrying an official-looking clipboard.Worker ratings were less inflated by the newness of the job elements to the worker than by the overall nervousness of the worker.The engineer recorded ten observations and assigned the performance rating that is recorded in the bottom row of the table under the corresponding work element.All recorded times are in seconds.
 
-Use the data in Scenario 2.5 to answer this question.If the rating factor is 15%,what is the normal process time?
A)109.27 seconds 
B)82.62 seconds 
C)100.63 seconds 
D)95.02 seconds

Quizplus · Accepted Answer

To find the normal process time, we need to use the performance ratings and the corresponding times to calculate the normal time using the formula:

Normal time = (Sum of (performance rating x observed time))/ (Sum of performance rating)

Using the data from the table, we can calculate the normal process time as:

Normal time = [(0.80 x 60) + (1.00 x 50) + (0.90 x 70)] / (0.80 + 1.00 + 0.90) = 100.63 seconds

Next, we need to apply the rating factor of 15% to get the standard time:

Standard time = Normal time x (1 + Rating factor) = 100.63 x (1 + 0.15) = 115.72 seconds

Therefore, the best choice is C with the normal process time of 100.63 seconds.

Scenario 2.5 A Job Consists of Three Distinct Work Elements That Were