1. Marks Macho Marbles collected the following information to develop a standard time for building marbles.

Observations	Element (in minutes)
	1	2	3	4	5
Cycle 1	2.23	1.30	1.75	2.79	1.62
Cycle 2	2.27	1.28	1.80	2.71	1.60
Cycle 3	2.25	1.34	1.77	2.65	1.62
Cycle 4	2.23	1.35	1.85	2.61	1.62
Cycle 5	2.26	1.31	1.88	2.63	1.64
Cycle 6	2.27	1.27	1.84	2.63	1.66
Cycle 7	2.22	1.37	1.83	2.65	1.62
Cycle 8	2.26	1.31	1.80	2.63	1.66
Cycle 9	2.23	1.35	1.85	2.65	1.60
Cycle 10	2.22	1.33	1.83	2.63	1.62
Rating factor	0.95	0.85	1.15	1.10	1.00
Frequency	1	1	1	1	1

1. Calculate the mean observed time for each element.
2. Calculate the normal time for each element.
3. Using an allowance factor of 20 percent of job time, calculate the standard time for each element and for the entire job.
4. How many units should be completed each hour if the worker performs at 100 percent of the standard?
5. How many units should be completed each hour if the worker performs at 90 percent of the standard?