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QUESTION
Before making the decision to introduce a new version of Coke (New Coke) in 1985, the Coca-Cola company introduced New Coke to approximately 40,000...
Before making the decision to introduce a new version of Coke (New Coke) in 1985,
the Coca-Cola company introduced New Coke to approximately 40,000 consumers in
30 cities in the USA. With the brands not identified, 55% chose New Coke over the
old version (Old Coke). Assume that this was a random sample of the population.
(a) Use a hypothesis test to find out if there was evidence that more US consumers
preferred New Coke to Old Coke.
