Survey on Vitamin Usage A survey in Mens Health magazine
Chapter 8, Problem 23(choose chapter or problem)
Survey on Vitamin Usage A survey in Mens Health magazine reported that 39% of cardiologists said that they took vitamin E supplements. To see if this is still true, a researcher randomly selected 100 cardiologists and found that 36 said that they took vitamin E supplements. At a _ 0.05 test the claim that 39% of the cardiologists took vitamin E supplements. A recent study said that taking too much vitamin E might be harmful. How might this study make the results of the previous study invalid?
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