A Methods and Measurement Analyst Wants to Develop a Time

Multiple Choice

A methods and measurement analyst wants to develop a time standard for a certain task. In a preliminary study, he observed one worker perform the task six times with an average observed time of 20 seconds and a standard deviation of two seconds.
What is the normal time for this task if the employee worked at a 20 percent faster pace than average?

A)  4 seconds
B)  16.7 seconds
C)  20 seconds
D)  24 seconds
E)  100 seconds