An Employee Was Observed Over an Extended Period of Time

Essay

An employee was observed over an extended period of time for a work-sampling study with the following results:
$\begin{array}{lll}&& \text { Performance } \\\text { Activity } & \text { Percentage of Time } & \text { Rating Factor }\\\text { On the Phone } & 30 & 1.15 \\\text { Filing } & 35 & 0.70 \\\text { Face-to-Face with Customer } & 25 & 1.10 \\\text { Idle } & 10 & \ldots . . .\end{array}$ While doing her job in a 40-hour workweek, the employee helped 120 face-to-face, walk-in customers. Determine the standard time in minutes that it took her to help each customer.