Three randomly selected groups of 25 10-year olds are drawn from a slum area. One group is given one extra hour of private instruction each day at school. The parents of those in Group 2 are given special training in helping their children with their homework. Group 3 is given no treatment. Do the groups differ on achievement test scores after three months? Choose the appropriate test.

a. Chi-square Test for Goodness of Fit with 1 df
b. Chi-square Test for Goodness of Fit with > 1 df
c. Chi-square Test for Independence
d. z-test for a proportion
e. One-way ANOVA
f. Two-way ANOVA


Ans: e

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