Alt The effect of curing pressure on bond strength was tested for four different

Question

Alt The effect of curing pressure on bond strength was tested for four different adhesives. There were pressure. Five replications w three levels of curing 287.9. and curing pressure as the column factor, ue sums of squares were: SSA155.7. SSB SSAB- 156.7, and SST 997.3. a. Construct an ANOVA table. You may give ranges for the P-values. 1the additive model plausible? Explain. the P-valuc P-value e. Is it plausible that the main effects of curing pressure are all equal to 0? Provide the valuc of the test statistic and d. Is it plausible that the main effects of adhesive are all cqual to 0? Provide the value of the test statistic and the

Explanation / Answer

a) ANOVA Table

c) P-value of pressure =  0.00143867 which is less than alpha 0.05, so we reject H0

Thus we conclude that the main effect of pressure is not equal to zero

d) P-value of pressure =  0.08262962 which is greater than alpha 0.05, so we do not reject H0

Thus we conclude that the main effect of Adhesive is equal to zero

Source Sum of square df mean Square F F-critical P-value Adhesive 155.7 4 38.925 2.353149 2.776289 0.08262962 Presser 287.9 2 143.95 8.702267 3.402826 0.00143867 Interaction 156.7 8 19.5875 1.184131 2.355081 0.34874792 Error 397 24 16.54166667 Total 997.3 35

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