To test whether the mean time to mix a batch of adhesive is thesame formachines produced by

four manufacturers, TiteBondMax obtained DATA on the time (minutes) needed to mix the materials.

Test whether the machines have equal mean mixing time at

A The data provide insignifi cant evidence against HO: Equal means at pvalue

0.514. The machine are considered equal.

B None of the answers are correct.

C The data provide weak evidence against HO: Equal means at pvalue 0.072. Equality of means

remains plausible.

D The data provide strong evidence against HO: Equal means at pvalue 0.013. The mixing machines

are not all equal.

E The data provide extreme evidence against HO: Equal means at pvalue 0.001. The mixing machines

are not all equal.

F The pvalue 0.0001is extreme evidence that the machines are not all the same.