show work please

1. A analyst has timed a metal-cutting operation for 50 cycles. The average time per cycle was 8.00 minutes, and the stand deviation was 1.20 minutes for a worker with a performance rating of 75 percent. Assume an allowance of 9 percent of job time and 12 percent of job day. Find the standard time(s) for both the job and the day of this operation. (10 points each) 2. How many observations should a time study analyst plan for in an operation that has a standard deviation of 1.3 minutes per piece if the goal is to estimate the mean time per piece to within 2 minutes with a confidence of 78.5 percent. (25 points) [use this formula when desired accuracy is a time)