4. For the data in the following matrix: No Treatment Treatment Male M = 8 M = 14 Overall M = 11 %3D Female М — 4 M = 10 Overall M = 7 overall overall M = 6 М 3 12 a. Which two means are compared to describe the treatment main effect? b. Which two means are compared to describe the gender main effect? c. Is there an interaction between gender and treat- ment? Explain your answer.

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