Question 4: How many work cycles should be timed to estimate the average cycle time to within 2 percent of the sample mean with a confidence of 99 percent if a pilot study yielded these times (minutes): 5.2, 5.5, 5.8, 5.3, 5.5, and 5.1? The standard deviation is 0.253 minutes per cycle. (Do not round intermediate calculations. Round up your final answer to the next whole number.) Number of work cycles