Math 153-DDH Name: ________________________________

11/05

Project Extra Credit 3) 10 points Due: Wednesday, 12/7/05 (or at the latest Friday, 12/9/05).

1. Read the article, “US College Students’ Use of Tobacco Products,” JAMA, August 9,2000 and answer the following questions. You may obtain it from the following site. You can obtain a print-out using a CCBC computer.

Reading List for Math153

www.ccbcmd.edu Libraries ( on the right) CCBC Essex library (on the left) Class related help Janice Dykacz Math153

2. On p. 701, under RESULTS Prevalence of Tobacco Use, the authors state that “More than 60% of college students have tried a tobacco product….”

It appears that the population is all US college students. Do you believe the sample described in this article is representative of this population? You must explain your answer for credit.

3. See Table 1 on p. 701, the third line, Total tobacco, Lifetime Use.

First, complete the items below, rounding all numbers to the nearest whole number.

Men: x (the number who used tobacco in their lifetimes) = ___________

n (the total number of men in the survey) = ___________

Women: x (the number who used tobacco in their lifetimes) = ___________

n (the total number of women in the survey) = ___________

Write the steps for the hypothesis test that is being used in this line (the percent of men who used tobacco in their lifetimes is equal to the percent of women who used tobacco in their lifetimes).

H₀: ________________________

H_a: ________________________

Which routine are you using on the calculator? ____________________________________

1. a = _______

2. Test statistic: ________________

p-value: ____________________

3. Conclusion: ____________________________________________

Does your conclusion agree with the article? You must explain for credit.