Evaluate the Following Generalization(s), Identifying Sample, Population, Attribute of Interest

Essay

Evaluate the following generalization(s), identifying sample, population, attribute of interest, and the extent to which the claims involved are knowable. Consider carefully the size and diversification of the sample and the extent to which the population differs or may differ from the sample; remember, what's important is that the sample be representative.
Ronald is driving across the country when his car develops a minor mechanical problem. He can fix the trouble himself, but he'll need a wrench of a size he doesn't have. He resolves to stop at the next Sears retail store he sees to purchase one. He's been in four or five Sears retail stores in the past, and all of them have carried automotive tools. So he is confident that all Sears retail outlets stock them.