please include excel formats so that I understand how to work the problem.

A time study was conducted on a job that contains four elements. The observed times and performance ratings for five cycles are shown in the following table. Note: Some of the elements occur only periodically. Observations (minutes/cycle) 1 2 4 Element 1 2 Performance Rating (%) 95 80 105 100 3 0.44 1.47 0.51 1.52 0.83 1.20 0.48 1.55 0.88 1.27 1.50 0.90 1.10 5 0.50 1.49 0.94 1.16 3 4 1.08 a. Determine the average cycle time for each element (OT). b. Find the normal time for each element. c. Assuming an allowance factor of 12 percent of job time, compute the standard time for this job. * Round your final answers to two decimal places