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Simple linear regression is used for which purpose? A researcher tests the hypothesis that men and women differ in the amount of time (number of hours) they spend exercising weekly. Which statistical test might the researcher use, assuming a reasonably normal distribution of values?

• Question 1 7 out of 7 points In the context of multiple regression, what is a beta weight? Selected Answer: C. A standardized regression coefficient Answers: A. A residual B. An effect size C. A standardized regression coefficient D. A standard score • Question 2 7 out of 7 points A power analysis to estimate the required sample size for a study relies on several pieces of information that the researcher must know or approximate. Which type of in...