Question

California Highway Patrol statistics revealed that more accidents occurred to blue cars than to cars of any other color. The inference that while driving a blue car, one is at higher risk of an accident than while driving a car of another color is
A. CorrectB. Incorrect, because the comparison is not based on ratesC. Incorrect, because no control or comparison group is usedD. Incorrect, because no test of statistical significance has been madeE. Incorrect, because prevalence is used instead of incidence

Answer 1

Answer: B. Incorrect, because the comparison is not based on rates.

Explanation:

It is given that the more accidents occurred to the blue cars than to the cars of other colors but there is no statistical figure is given which can be used to analyze and compare the rates of accidents occurred while driving blue car and any other car. Thus no statistical inference can be drawn for the given situation.