A developmental psychologist is interested in whether children of three different ages (5, 8, and 11 years)

Question:

A developmental psychologist is interested in whether children of three different ages (5, 8, and 11 years) differ in their liking for a certain kind of music. The psychologist studies 200 children at a local elementary school. The results are shown in the table below. Is there a significant relationship between these two variables? (Use the .05 level.)
(a) Carry out the steps of hypothesis testing.
(b) Make a sketch of the distribution.
(c) Figure the effect size.
(d) Explain your answer to (a) to a person who has never taken a course in statistics.