18) A marketing research firm wished to study the relationship between wine consumption and whether a person likes to watch professional tennis on television. One hundred randomly selected people are asked whether they drink wine and whether they watch tennis. The following results are obtained:


Watch Tennis Do Not Watch Tennis Totals
Drink Wine 16 24 40
Do Not Drink Wine 4 56 60
Totals 20 80 100


a) Test the hypothesis that whether people drink wine is independent of whether people watch tennis. Set α = 0.05

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