Answered: Tobacco companies have actively…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Tobacco companies have actively attempted to remake their public image by launching a youth smoking prevention advertisement campaign. Suppose you design an experiment with two groups of high school students from Vietnam. You show a tobacco company's youth smoking prevention ads to one of the groups of students every day for a week at the beginning of their math class. After the week, you assess the groups on the degree to which the students prefer to date/not date smokers, using a 5-point Likert scale. The first group has 97 students and the second group has 49. The first group, who saw the ads, scored an average of 0.8 with a sample standard deviation of 0.9 on the 5-point Likert scale. The second group, who did not see the ads, scored an average of 3.4 with a sample standard deviation of 2.4 on the 5-point Likert scale.

Suppose you intend to conduct a hypothesis test on the difference in population means. In preparation, you identify the sample that saw the ads as sample 1 and the sample that did not see the ads as sample 2.

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