The results in the table are from a study of physical attractiveness and subjective well-being (E. Diener et al., Journal of Personality and Social Psychology, vol. 69, 1995, pp. 120–129). As part of the study, college students in a sample were rated by a panel on their physical attractiveness. The table presents the number of dates in the past three months for students rated in the top or bottom quartile of attractiveness. Analyze these data. Write a short report that summarizes the analyses and makes interpretations.
Answer to relevant QuestionsA Time Magazine article titled “Wal-Mart’s Gender Gap” (July 5, 2004) stated that in 2001 women managers at Wal-Mart earned $14,500 less than their male counterparts. a. If these data are based on a random sample of ...From the box formula for the standard error at the end of Section 10.1, se(estimate 1 - estimate 2) = √[se(estimate 1)]2 + [se(estimate 2)]2, if you know the se for each of two independent estimates, you can find the se of ...Refer to part c in the previous exercise. Calculate the 95% confidence interval comparing the population means for women and men. Interpret the result including the relevance of 0 being within the interval or not. a. Show ...Refer to the previous exercise. a. Show that the test statistic for H0: μ1 = μ2 equals t = 11.7. If the population means were equal, explain why it would be nearly impossible by random variation to observe this large a ...In the previous exercise, plot the data. Do you see any outliers that could influence the results? Remove the most extreme observation from each group and redo the analyses. Compare results and summarize the influence of the ...
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