In an air pollution study, a random sample of 200 households was selected from each of two communities. A respondent in each household was asked whether or not anyone in the household was bothered by air pollution. The responses were as follows:

Any Member of Household Bothered by Air Pollution?

Community Yes No Total I 43 157 200 II 81 119 200 Total 124 276 400 Can the researchers conclude that the two communities differ with respect to the variable of interest?

Let a ¼ .05.