Cornell Professor of Nutrition David Lev it sky recruited students from two large sections of an introductory
Question:
Cornell Professor of Nutrition David Lev it sky recruited students from two large sections of an introductory health course to test the validity of the €œFreshman 15€ theory that students gain 15 pounds their first year. Although they were volunteers, they appeared to match the rest of the freshman class in terms of demographic variables such as sex and ethnicity. The students were weighed during the first week of the semester, then again 12 weeks later.
a) Use a Wilcoxon signed-rank test to test whether these students€™ weights changed. State your hypotheses, check conditions, and complete the test (with technology).
b) Would you prefer the nonparametric test, or the paired t-test asked for in Chapter 13? Explain.
Step by Step Answer:
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman