In the study Durability of Rubber to Steel Adhesively Bonded Joints, conducted at the Department of Environmental Science and Mechanics and analyzed by the Statistics Consulting Center at Virginia Tech, an experimenter measured the number of breakdowns in an adhesive seal. It was postulated that concentration of seawater A, temperature B, pH C, voltage D, and stress E influence the breakdown of an adhesive seal. A ½ fraction of a 25 factorial experiment was used, with the defining contrast being ABCDE. The data are as follows:
A
B
C
D
E
Response
−1
1
462
746
714
1070
474
832
764
1087
522
854
773
1068
572
831
819
1104
Perform an analysis of variance on main effects and two factor interactions AD, AE, BD, BE, assuming that all three-factor and higher interactions are negligible. Use α = 0.05.
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