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Fear of darkness is a common emotion. The following data were obtained by asking 200 individuals in each age group whether they had serious fears of darkness. At a = 0.01 do we have sufficient evidence to reject the hypothesis that â€œThe same proportion of each age group has serious fears of darknessâ€?

a. The above table is an incomplete contingency table even though at first glance it might appear to be multinomial. Explain why.

b. Solve using the p-value approach.

c. Solve using the classical approach

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