Children’s recall of TV ads. Refer to the Journal of Advertising (Spring 2006) study of children’s recall of television commercials, Exercise 8.15 (p. 434). You used a smallsample t-test to test the null hypothesis , where m1 = mean number of ads recalled by children in the video only group and m2 = mean number of ads recalled by children in the A/V group. Summary statistics for the study are reproduced in the table below. The validity of the inference derived from the test is based on the assumption of equal group variances, i.e., .
a. Set up the null and alternative hypotheses for testing this assumption.
b. Compute the test statistic.
c. Find the rejection region for the test using α = .10.
d. Make the appropriate conclusion in the words of the problem.
e. Comment on the validity of the inference derived about the difference in population means in Exercise 8.15.
updated 8.4.2014 G-PAC Worksheet CCAS Office of Undergraduate Studies 801 22nd St, NW Phillips Hall 107 Washington, DC 20052 Phone: (202) 994-6210 Fax: (202) 994-6213 The General Education Curriculum- Perspective,Analysis,Communication (G-PAC) educates students to engage in active intellectual inquiry by developing analytical skills, communication skills, and diverse perspectivesA.cross a range of disciplines, students acquire enhanced analytic skills in quantitative and scientific reasoning and critical and creative thinking, along with a global and cros-scultural perspective, local/civic engagement, and effective communication skills. Name: