Question: A man is tested to determine whether he can tell butter from margarine. He is blindfolded and given small bites of English muffin to identify.

A man is tested to determine whether he can tell butter from margarine. He is blindfolded and given small bites of English muffin to identify. At each trial, an English muffin with either butter or margarine is randomly chosen. The experiment is designed so that he will have exactly 15 bites with butter and 15 with margarine. He gets 14 right out of 30. Can he tell butter from margarine at the 0.05 level? Explain.

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