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

Short Answer

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.
Victor has just heard somewhere that regular injections of testosterone help improve the memories of men his age, but he can't recall where he heard it. "Probably was on the TV news," he figures. "I don't read the newspaper very often."