Kissing right? EXPLO 3.1 Most people are right handed and event he right eye is dominant for most people. Developemental biologist have...
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The mention of "kissing" suggests a focus on human behavior, possibly related to handedness and eye dominance. Show more…
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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. Does the result of the experiment suggest that the 2$/ 3$ figure is implausible for kissing behavior? State and test the appropriate hypotheses.
The Basics of Statistical Inference
Inferences for a Population Proportion
As reported in the journal Nature (2003), a German biopsychologist conjectured that the human tendency to turn to the right manifests itself in other ways as well, so he studied kissing couples to see if they tended to lean their heads to the right while kissing. He observed a total of 124 kissing couples, 80 of them leaned to the right when they kissed. a) Use these sample data to test whether or not more than half of the population of kissing couples lean their heads to the right. Report the population, variable, parameter of interest, and hypotheses (in symbols and in words). Sketch the associated normal curve. Calculate the p-value. State your conclusion at the α = 0.01 significance level. b) Determine what type of error is possible based on your conclusion. State what that type of error means in the context of this study.
Joanna Q.
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