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The following table contains the measurements of the key length dimension from an epoxy molded circu

Question: The following table contains the measurements of the key length dimension from an epoxy molded circuit board component. A sample size is of five was taken at each one-hour interval off the milling machine:

			Observations
Sample #	1	2	3	4	5
1	0.486	0.499	0.493	0.511	0.481
2	0.499	0.506	0.516	0.494	0.529
3	0.496	0.500	0.515	0.488	0.521
4	0.495	0.506	0.483	0.487	0.489
5	0.472	0.502	0.526	0.469	0.481
6	0.473	0.495	0.507	0.493	0.506
7	0.495	0.512	0.490	0.471	0.504
8	0.525	0.501	0.498	0.474	0.485
9	0.497	0.501	0.517	0.506	0.516
10	0.495	0.505	0.516	0.511	0.497
11	0.495	0.482	0.468	0.492	0.492
12	0.483	0.459	0.526	0.506	0.522
13	0.521	0.512	0.493	0.525	0.510
14	0.487	0.521	0.507	0.501	0.500
15	0.493	0.516	0.499	0.511	0.513
16	0.473	0.506	0.479	0.480	0.523
17	0.477	0.485	0.513	0.484	0.496
18	0.515	0.493	0.493	0.485	0.475
19	0.511	0.536	0.486	0.497	0.491
20	0.509	0.490	0.470	0.504	0.512