Ten observations were selected from each of 3 populations and ananalysis of variance was performed on the data. The following arethe results:
| Source of variation | Sum of squares | degrees of freedom | mean square | F |
| Between treatments | 82.4 | | | |
| Within treatments (Error) | 158.4 | | | |
| Total | | | | |
A. Using alpha= .05, test to see if there is a significantdifference among the means of the three populations.
B. If in part A you concluded that at least one mean isdifferent from the others, determine which mean is different usingLSD method. The three samples are (mean) X1=24.8, X2=23.4,X3=27.4.
