In 2004, controversy arose regarding the issue of whether or not eating dairy pr
ID: 3133972 • Letter: I
Question
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. It her conclusion is erroneous, would it he a Type I or a Type II Error? c. Which type of error would the diary industry most want to avoid committing? d. Describe the impact each type of error would have on dieters.Explanation / Answer
a)
A type I error is incorrectly rejecting a true null hypothesis.
As he rejected the null, then it could be a TYPE I ERROR. [ANSWER]
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b)
A type II error is incorrectly failing to reject a false null hypothesis.
As he fail to reject the null, then it could be a TYPE II ERROR. [ANSWER]
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c)
They want to avoid claiming it can help people lose weight, when in fact, it does not. If they commit such error, their reputation can be ruined.
Hence, they want to avoid a TYPE I ERROR. [ANSWER]
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d)
From a dieters' point of view, a type I error would make them consume more dairy products, when in fact, it doesn't help them. A type II error would make them continue with their current diet, when in fact, having more dairy products in their diet would have helped them lose weight.
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