Module 03 - Case Assignment

Genetically Modified Foods (cont.)

Welcome to the case study assignment for the third module of the course. Please reread the article below, which addresses genetically modified (GM) foods and Europe's unwillingness to accept them.

Anonymous, (Jun 20, 2003) U.S., European split widens on modified foods Houston Chronicle; Houston, Tex pg. 3

You are going to continue your test from Module 2 to see if genetically modified foods are different from non-genetically modified (NGM) foods. Assume you are continuing your analysis of GM and NGM foods, and answer the following questions:

1. What would be the practical negative impact if your hypothesis test incurred a Type I Error? What would be the practical negative impact if the test incurred a Type II Error?

2. What affect will a Type I Error have on your study? (Hint: This question is asking how you might modify your study in order to minimize Type 1 errors.)

3. What affect will a Type II Error have on your study? (Hint: Again, this is about what you would do, if anything, to your study to minimize Type II error.)

4. Use the 3PE and the information below to determine if there is a significant difference in yields for this farmer.

Mr. Greenjeans, a farmer in the upper portion of the lower peninsula of Michigan, about 15 miles northwest of Houghton Lake, is testing GM corn on one acre of his farm. This acre of GM corn yielded 156 bushels of corn. Compared to the yield from the other 15 acres of NGM corn; is this a significant difference? Use the .05 significance level?

Answer to the Questions

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