Reference no: EM131971531

One way ANOVA

Question 1:

Data have been collected to test whether the thickness of a poly silicon coating depends upon the deposition temperature. Test whether there is any difference in the thickness at different temperature levels at a = 0.05.

Table 1

Temperature Polysilicon Thickness

1	110	112	109	115
2	105	99	100	103
3	115	120	109	117
	102	110	108	102

Question 2:

A chemical engineer has reason to believe that the batches of raw materials used in the manufacture of a compound differ significantly in Nitrogen content. Currently the company uses many batches: for this study, the engineer randomly selected five of these batches and recorded 3 observations on each batch. The data is in Table 2. Conduct ANOVA at a = 0.01 and test whether there is any difference

Table 2 Batches

1	2	3	4	5
8.5	8.4	8.4	8.5	8.9
8.6	8.5	8.9	8.4	8.6
8.2	8.3	8.2	8.2	8.2