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