For the data in the following matrix: No Treatment Treatment Male M = 5 M = 3

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Question:

For the data in the following matrix: No Treatment Treatment
Male M = 5 M = 3 Overall M = 4
Female M = 9 M = 13 Overall M = 11
overall M = 7 overall M = 8

a. Describe the mean difference that is the main effect for the treatment.
b. Describe the mean difference that is the main effect for gender.
c. Is there an interaction between gender and treatment? Explain your answer.