Statistics 2070 Fall 2010 Assignment Number 9 --- Due Friday November 5 Use the

Question

Statistics 2070

Fall 2010

Assignment Number 9 --- Due Friday November 5

Use the following scenario for problem 1 through 14. The importance of Stem Cell research. There has been considerable debate about legalizing Stem Cell research. In order to add our 2 cents worth to the debate, I have decided to ask the following question, “Do you think that Stem Cell research should be legalized in the United States; YES or NO?” to a sample of 20 people who have at least one parent with Alzheimer’s disease and to a sample of 30 people who do not have a parent with Alzheimer’s disease. Here are the results

Stem Cell Research Should be Legalized

YES NO

Parent with Alzheimer’s Disease 18 2

No Parent with Alzheimer’s Disease 10 20

1. What is the variable in this scenario? ________________________________________________

2. What is its level of measurement? __________________________________________________



3. What is the appropriate test situation? _______________________________________________

4. H0 in English __________________________________________________________________

5. HA in English __________________________________________________________________

6. What is the critical value _________________________________________________________

7. For what values of the test statistic will you reject H0 __________________________________

8. Calculate the value of the test statistic (show all of your work)



O



E





(O – E)





(O – E)2





(O – E)2 /E



Value of the Test Statistic = ______________________________________

13. What is your statistical conclusion, to fail to reject H0 or reject H0? Why?

14. Interpret your statistical conclusion.

Explanation / Answer

. What is the variable in this scenario? Stem Cell Research 2. What is its level of measurement? Yes No 3. What is the appropriate test situation? Chi-square test

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