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

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 standard time for the entire job?

A) greater than or equal to 10.0 minutes
B) less than 10.0 minutes but greater than or equal to 8.5 minutes
C) less than 8.5 minutes but greater than or equal to 7.0 minutes
D) less than 7.0 minutes