In a Stopwatch Time Study, the Number of Cycles That

Multiple Choice

In a stopwatch time study, the number of cycles that must be timed is a function of:
(I) the variability of observed times.(II) the desired accuracy for the estimated job time.(III) the desired level of confidence for the estimated job time.

A) I only
B) I and II only
C) II and III only
D) I, II, and III
E) I and III only