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Useful practice problems for Q11-Q13 are: 7.28, 7.30, 7.31, & 7.36 11. Which hypothesis test is the most appropriate to determine whether the average of actual charges Is different for males than females? "HINT" - REMEMBER TO USE A LEVEL OF SIGNIFICANCE OF 0.05, IF IT IS NEEDED. a. Two-sample Z-test (two-tailed) b. Two-sample paired T-test (two-tailed) c. Two-sample T-test assuming equal variances (two-tailed) d. Two-sample T-test assuming unequal variances (two-tailed) e. Two-Sample F-test for equal variances Page | 2 Homework #1 - Hypothesis Testing OBA312 - Spring 2023 12. Organize the data as necessary and use the automated analysis tools in Excel to execute the test from Q11. What is the p-value? "HINT* - RECALL REORGANIZING THE DATA CAN BE DONE BY: (1) SORTING THE DATA AND COPY/PASTING CAREFULLY OR (2) SORTING AND ADDING A FORMULA TO SUCCESSIVELY COUNT OBSERVATIONS WITHIN EACH SEX AND THEN USE A PIVOT TABLE TO RE-STRUCTURE THE DATA INTO THE FORMAT WE NEED. 13. Based on the result of Q12, and assuming alpha = 0.05, what is your conclusion in English? a. Males and females have significantly different average charges. b. Males and females do not have significantly different average charges