8. Research has shown that Americans sleep an average of 7.2 hours per night, but we do not know the standard deviation. Does a sample of Walden undergraduate students sleep a different amount of time than the population mean of 7.2 hours per night? POSSIBLE ANSWERS: A: correlation, B: regression, C: independent-samples one-way ANOVA, D: related-samples one-way ANOVA, E: one-sample t-test, F: matchedsamples t-test, G: Goodness of Fit Test, H: z-test, I: test of independence, J: independent-samples t-test, K: repeated-measures t-test