Table H.3
A worker was observed for four cycles in a repetitive task.The observer recorded the following times,in seconds,using the continuous method.The ratings for each element and frequency it is performed are also indicated in the table.The allowance fraction is 20 percent.

-Use the information in Table H.3.What is the select time for work element 2?
A)fewer than 17 seconds
B)greater than or equal to 17 seconds but fewer than 22 seconds
C)greater than or equal to 22 seconds but fewer than or equal to 27 seconds
D)greater than or equal to 27 seconds

Question

Table H.3
A worker was observed for four cycles in a repetitive task.The observer recorded the following times,in seconds,using the continuous method.The ratings for each element and frequency it is performed are also indicated in the table.The allowance fraction is 20 percent.
 
-Use the information in Table H.3.What is the select time for work element 2?
A)fewer than 17 seconds 
B)greater than or equal to 17 seconds but fewer than 22 seconds 
C)greater than or equal to 22 seconds but fewer than or equal to 27 seconds 
D)greater than or equal to 27 seconds

Quizplus · Accepted Answer

To calculate the select time for work element 2, we need to first calculate the normal time and then apply the allowance fraction of 20%.

The formula to calculate normal time is: 
Normal Time = Sum of (Observed Time * Rating) / Total Rating

For work element 2, the observed times and ratings are:
Observed Time = 23 seconds 
Rating = 2

Total Rating for all cycles = 4

So, the normal time for work element 2 is:
Normal Time = (23 * 2) / 4 = 11.5 seconds

Now, to calculate the select time, we apply the allowance factor of 20%:
Select Time = Normal Time + (Allowance Factor * Normal Time)
Select Time = 11.5 + (0.2 * 11.5)
Select Time = 13.8 seconds

Based on the answer choices given, we can see that the select time falls within the range of "greater than or equal to 22 seconds but fewer than or equal to 27 seconds", which is answer choice C. So, the best choice is C.

Table H.3 A Worker Was Observed for Four Cycles in a Repetitive