Three Work Study Analysts Are Rating an Employee

Three work study analysts are rating an employee.Work study analyst 1 rates the employee at performance rating factor = 1.0 and an observed time of 2.8 minutes per unit.Work study analyst 2 rates the employee at PRF = 1.1 and an OT of 3.1 minutes per unit.Work study analyst 3 rates the employee at PRF = 0.8 and an OT of 3.0 minutes per unit.What should the standard time be,assuming an allowance factor of 20%?

A) 3.560 minutes per unit
B) 3.339 minutes per unit
C) 3.444 minutes per unit
D) 3.667 minutes per unit