Do men's heights vary more than women's? The nurse at a women's college has collected data from physical exams. The standard deviation of women's heights is found to be 2.5 in. The college has now become coed and the first 20 male students have heights with a standard deviation of 2.8 in. Use a 0.025 significance level to test the claim that men's heights vary more than women's. If that claim is not supported, does this mean that men's heights do not vary more than women's?
Use the traditional method to test the given hypotheses. Follow the steps outlined and draw the appropriate graph. In all cases, assume that the population is normally distributed and that the sample has been randomly selected.