In a completely randomized design, 12 experimental units were used for the first

Question

In a completely randomized design, 12 experimental units were used for the first treatment 15 for second treatment and 20 for third treatment. Complete the following analysis of variance. At a 0.05 level of significance, is there a significant difference between the treatments? The analysis of data involving three treatments with 5 observations for each treatment resulted in: At alpha = 0.05 level of significance, can we reject the null hypothesis that the means of thee three treatments are equal?

Explanation / Answer

1.

number of treatments =3

number of units =12+15+20 =47

s

source of variation Sum of squares Degree of freedo Mean sum of square F Treatment 1200 2 600 43.99 Error 600 44 13.64 Total 1800 46

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