Statistics For Business And Economics, University Of Connecticut
18th Edition
ISBN: 9781323751497
Author: Mcclave/benson/sincich
Publisher: Pearson Education
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Textbook Question
Chapter 15.3, Problem 15.23ACB
The X-Factor in golf performance. Many golf teaching professionals believe that a greater hip-to-shoulder differential angle during the early downswing—dubbed the “X-Factor”–leads to improved golf performance. The Journal of Quantitative Analysis in Sports (Vol. 5, 2009) published an article on the X-Factor and its relationship to golfing performance. The study involved 15 male golfers with a player handicap of 20 strokes or fewer. The golfers were divided into two groups: 8 golfers with a handicap of 10 strokes or fewer (low-handicapped group) and 7 golfers with a handicap between 12 and 20 strokes (high-handicapped group). The X-Factor, i.e., the hip-to-shoulder differential angle (in degrees), was measured for each golfer at the top of the backswing during his tee-shot. The researchers hypothesized that low-handicapped golfers will tend to have higher X-Factors than high-handicapped golfers. The researchers also discovered that the sample data were not
- a. What nonparametric test is appropriate for analyzing these data?
- b. Specify the null and alternative hypotheses of interest in the words of the problem.
- 1. c Give the rejection region for this test. using α = .05.
- c. The researchers reported a p-value of .487. Use this result to draw a conclusion.
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Chapter 15 Solutions
Statistics For Business And Economics, University Of Connecticut
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