A Methods and Measurement Analyst wants to develop a time standard for a certain task. In a preliminary study, he observed one employee perform the task six times with an average of 20 seconds and a standard deviation of 2 seconds. What is the normal time (NT) for this task if the employee worked at a twenty percent faster pace than is average? Select one: a. 4 seconds O b. 20 seconds O c. 100 seconds O d. 24 seconds Oe. 16.7 seconds