Question: An automaker entered the marketplace with a car to compete with two other brands already in that market. In the first month after introduction, the

An automaker entered the marketplace with a car to compete with two other brands already in that market. In the first month after introduction, the new entry got 355 sales of a random sample of 1000 sales from the total market. Can the automaker with the new entry say with a 95% confidence that he got more than the projected 1/3 of the sales due to other than random causes?

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