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In 2004, controversy arose regarding the issue of whether or not eating dairy products could help people lose weight.31 The null hypothesis would state that dairy products have no effect.

a. Michael Zemel, director of The Nutrition Institute at the University of Tennessee, carried out a study from which he concluded that eating dairy products does help people lose weight. If his conclusion is erroneous, would it be a Type I or a Type II Error?

b. Jean Harvey-Berino, chair of the Department of Nutrition and Food Sciences at the University of Vermont, carried out a study from which she concluded that eating dairy products does not help people lose weight. If her conclusion is erroneous, would it be a Type I or a Type II Error?

c. Which type of error would the dairy industry most want to avoid committing? d. Describe the impact each type of error would have on dieters.

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