Is there any evidence to suggest that the proportion of

Question

Psychology and Human Behavior

Two recent studies suggest that people who drive really nice cars exhibit some very bad habits. In one study, as a car approached a crosswalk, a person stepped into the road, and the driver's reaction was recorded. In another, similar study, independent random samples of drivers were selected, and their behavior was observed at a four-way intersection.

For luxury-car drivers, n₁ = 217 and 130 cut ahead in the usual four-way rotation.

For ordinary-car drivers, n₂ = 182 and 82 violated the four-wayintersection rotation rule.

Is there any evidence to suggest that the proportion of luxury-car drivers with insufferable driving habits is greater than the proportion of ordinary-car drivers with similar habits? Use a = 0.01.

Note: The largest group of driving-rule etiquette violators were men, ages 35-50, with blue BMWs.