Question 4, 11.3.3 Part 2 of 5 HW Score: 15.17%, 3.03 of 20 points Points: 0 of 1 Save Assume that both populations are normally distributed. a) Test whether at the = 0.10 level of significance for the given sample data. b) Construct a 90% confidence interval about - H- n Sample 1 21 Sample 2 16 x 48.9 39.8 S 6.9 11.9 Click the icon to view the Student's t-distribution table. a) Perform a hypothesis test. Determine the null and alternative hypotheses. A. Ho: H1 H2, H: H>H B. Ho H1 H2, H Student's t-Distribution Table -Area in t-Distribution Area in Right Tail Degrees of 0.25 0.20 Freedom 123416 1.000 1.376 0765 0.15 0.10 0.05 0.025 0.02 1.963 3.078 1.061 1.386 1.860 0.01 0.005 0.0025 0.001 0.0005 0.978 1.250 133 2.132 0.718 0.906 0.711 0.896 Degrees of 0.25 0.20 0.15 0.10 Freedom 0.05 0.025 0.02 0.01 0.005 0.0025 0.001 0.0005 t-Distribution Area in Right Tail Print Done