Scenario 4.3 A Job Consists of Three Elements.Twenty Observations for Each Element

Scenario 4.3
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 15% of normal time.

-Use the information in Scenario 4.3.What is the normal time for job element #3?

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