1. Problem 7-1
An analyst has timed a metal-cutting operation for 50 cycles. The average time per cycle was 10.7 minutes, and the standard deviation was 1.20 minutes for a worker with a performance rating of 138 percent. Assume an allowance of 19 percent of job time. Find the standard time for this operation. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) 更多
