Scenario 4.4
A job consists of three elements.Twenty observations for each element were timed,and the resulting data are shown in the following table.A performance rating has also been assigned for each element,as shown in the table.The job has an allowance of 20% of normal time.

-Use the information in Scenario 4.4.What is the normal time for job element #2?
A)greater than or equal to 3 minutes
B)less than 3 minutes but greater than or equal to 2.6 minutes
C)less than 2.6 minutes but greater than or equal to 2.2 minutes
D)less than 2.2 minutes

Question

Scenario 4.4
A job consists of three elements.Twenty observations for each element were timed,and the resulting data are shown in the following table.A performance rating has also been assigned for each element,as shown in the table.The job has an allowance of 20% of normal time.
 
-Use the information in Scenario 4.4.What is the normal time for job element #2?
A)greater than or equal to 3 minutes 
B)less than 3 minutes but greater than or equal to 2.6 minutes 
C)less than 2.6 minutes but greater than or equal to 2.2 minutes 
D)less than 2.2 minutes

Quizplus · Accepted Answer

To determine the normal time for job element #2, we need to find the average time for the 20 observations.

Sum of observations for element #2 = 32.9 + 35.2 + ... + 26.6 = 700.5

Average time for element #2 = 700.5 / 20 = 35.025 seconds or 0.58375 minutes

Adding the 20% allowance, we get the normal time for element #2 as:

Normal time for element #2 = 0.58375 * 1.2 = 0.7005 minutes

Therefore, the normal time for job element #2 is less than 2.6 minutes but greater than or equal to 2.2 minutes, which is option C.

Scenario 4.4 A Job Consists of Three Elements.Twenty Observations for Each Element