Mathematics, 19.05.2021 18:50 bjdlesain
A research firm tests the miles-per-gallon characteristics of three brands of gasoline. Because of different gasoline performance characteristics in different brands of automobile, five brands of automobiles are selected and treated as blocks in the experiment; that is, each brand of automobile is tested with each type of gasoline. The results of the experiment (in miles per gallon) follow.
Gasoline Brands
Automobiles I II III
A 18 21 20
B 24 26 27
C 30 29 34
D 22 25 24
E 20 23 24
A.) At ? = .05, is there a significant difference in the mean miles-per-gallon characteristics of the three brands of gasoline?
B.) Analyze the experimental data using the ANOVA procedure for completely randomized designs. Compare your findings with those obtained in part (A). what is the advantage of attempting to remove the block effect?
Answers: 1
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