Probability and Statistics for Engineering and the Sciences
9th Edition
ISBN: 9781305251809
Author: Jay L. Devore
Publisher: Cengage Learning
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Chapter 8.4, Problem 46E
It is known that roughly 2/3 of all human beings have a dominant right foot or eye. Is there also right-sided dominance in kissing behavior? The article “Human Behavior: Adult Persistence of Head-Turning Asymmetry” (Nature, 2003: 771) reported that in a random sample of 124 kissing couples, both people in 80 of the couples tended to lean more to the right than to the left.
- a. If 2/3 of all kissing couples exhibit this right-leaning behavior, what is the
probability that the number in a sample of 124 who do so differs from theexpected value by at least as much as what was actually observed? - b. Does the result of the experiment suggest that the 2/3 figure is implausible for kissing behavior? State and test the appropriate hypotheses.
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Chapter 8 Solutions
Probability and Statistics for Engineering and the Sciences
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