statistics The ACME Company was concerned about the electric

The ACME Company was concerned about the electrical output of their key product solar cells, for three different cell types (A. B. and C). The wanted to see if the mean wattage was the same for the different cell types. To do this, they collected 6 wattage samples for each of the 3 types and conducted an ANOVA. Refer to the following partial ANOVA results from Excel (some information is missing). Assume that that the ANOVA used an alpha of alpha = 0.05. Is this ANOVA table from a one-factor ANOVA or a two-factor ANOVA and what is (are) the factors)?b What was the null hypothesis? Compute the Degrees of Freedom (df) for: Between groups: Within groups:

Solution

a) This is one factor ANOVA. the cells is the factor.

b) H0: the output is the same form the three cells.

c) between groups df=6-1=5

within groups df=216-6=210