The effect of curing pressure on bond strength was tested for four different adhesives. There were three levels of curing pressure. Five replications were performed for each combination of curing pressure and adhesive. With adhesive as the row factor and curing pressure as the column factor, the sums of squares were: SSA = 155.7, SSB = 287.9, SSAB = 156.7, and SST = 997.3. a) Construct an ANOVA table. You may give ranges for the P-values. b) Is the additive model plausible? Explain. c) Is it plausible that the main effects of curing pressure are all equal to 0? Provide the value of the test statistic and the P-value. d) Is it plausible that the main effects of adhesive are all equal to 0? Provide the value of the test statistic and the P-value.
The effect of curing pressure on bond strength was tested for four different adhesives. There
were three levels of curing pressure. Five replications were performed for each combination
of curing pressure and adhesive. With adhesive as the row factor and curing pressure as the
column factor, the sums of squares were: SSA = 155.7, SSB = 287.9, SSAB = 156.7, and
SST = 997.3.
a) Construct an ANOVA table. You may give
b) Is the additive model plausible? Explain.
c) Is it plausible that the main effects of curing pressure are all equal to 0? Provide the
value of the test statistic and the P-value.
d) Is it plausible that the main effects of adhesive are all equal to 0? Provide the value of
the test statistic and the P-value.
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