An experiment was done to test whether the volume of background noise would affect the number of errors people made doing a boring memory task. In the data below higher scores indicate more errors (a higher error rate). Complete the ANOVA to test for differences among the three groups.

High(loud)MediumLow (soft)

M =65.5M =61.5M=48.25

n =5n =5n = 5

Showdfand critical valuewith = .05.