Many political scientists now consider interest groups a normal and vital part of the political process

In 1999 Austin beat out Los Angeles to be declared the city with the dirtiest air in the country

Indicate whether this statement is true or false.

The results of Dr. Mottle's study indicate a level of statistical significance at the .01 level. What does this mean?

A) Results like these are due to chance factors only 1 in 100 times. B) There is a 95 percent chance that the sample results are not due to chance factors alone. C) The odds of such results based on chance alone are .05. D) One can be 95 percent confident that the results are due to a real relationship in the population.