Answer Happy

11) 20 pts A professor wants to know if online homework improves his student grades on the final exam. He randomly selects one class that uses online homework, and one class that does not use online homework (both in the same subject). At the end of the semester, he summarizes his findings: HClass Number of Students With online homework 27 in Without online homework 25 Mean final exam score. 73.6 67.9 Standard deviation 10.3 12.4 a. Write out the null and alternative hypotheses necessary to test at a 5% significance level if online homework improved the mean student grade on the final exam. Use the computer output to answer the questions., 10. leta sorbitono d P Std. Err. t Observed Sample 5.7 3.1748479 1.7953616 0.0395 habitinigile b. The test statistic is and the P-value is a unosite was ne spy et Sposle C. What conclusion should be made about the null hypothesis? What conclusion should be made about the alternative hypothesis? bloos wom d. pluga Sw atiz e. Final conclusion: Does the sample provide enough evidence to support that online homework improved student grades on the final exam? C