Two types of homework were investigated. Boys and girls were randomly assigned to the type A or type B homework , and later given a unit test. The following results were obtained:

Method A Method B
11.
Boys 40 30
Girls 20 30

a. Is there a main effect for type of homework? b. Is there a main effect for gender? c. Is there an interaction?

What will be an ideal response?


ANS:
a. No (mean is same for both methods); b. Yes (boys had higher mean on the unit test); c. Yes, girls do better with Method B and boys with Method A)

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