A study of 3000 people compared the rates of liver cancer between 2000 people who drank one or more cup of coffee per day and 1000 people who drank less coffee than that. Of the coffee drinkers, 21...

A study of 3000 people compared the rates of liver cancer between 2000 people who drank one or more cup of coffee per day and 1000 people who drank less coffee than that. Of the coffee drinkers, 21 got liver cancer, while of the people who didn’t drink coffee, 20 got liver cancer. Do a hypothesis test for the question: “Is there an association between coffee drinking and liver cancer?” Interpret your results. Does coffee drinking increase, decrease or not affect the probability of getting liver cancer?