Problem 7-3 A time study was conducted on a job that contains four...

Problem 7-3

A time study was conducted on a job that contains four elements. The observed times and performance ratings for six cycles are shown in the following table.

		OBSERVATIONS (minutes per cycle)
Element	Performance Rating	1	2	3	4	5	6
1	90%	0.44	0.50	0.43	0.45	0.45	0.46
2	85	1.50	1.52	1.47	1.51	1.49	1.52
3	110	0.84	0.89	0.77	0.83	0.88	0.80
4	100	1.10	1.14	1.08	1.18	1.16	1.26

a.	Determine the average cycle time for each element. (Round your answers to 3 decimal places.)

Element	Average cycle
1
2
3
4

b.	Find the normal time for each element. (Round your answers to 3 decimal places.)

Element	Normal time
1
2
3
4

c.	Assuming an allowance factor of 15 percent of job time, compute the standard time for this job. (Round your answers to 3 decimal places.)

Element	Standard time
1
2
3
4	???????????