13.56 Change-of-majors study: HSS. Refer to the data given for the change-of-majors study in the data file MAJORS. Consider sex and whether the students changed majors as the two factors. Analyze the data for HSS, the high school science grades. Your analysis should include a table of sample sizes, means, and standard deviations; Normal quantile plots; a plot of the means; and a two-way ANOVA using sex and major as the factors. Write a short summary of your conclusions.