a. all Hypothesis Tests must include all four steps,clearly labeled;
b. all Confidence Intervals must include all output aswell as the CI itself
c. include which calculator function you used for eachproblem.
3. At a community college, the mathematics departmenthas been experimenting with four different delivery mechanisms forcontent in their Statistics courses. One method is traditionallecture (Method I), the second is a hybrid format in which half thetime is spent online and half is spent in-class (Method II), thethird is online (Method III), and the fourth is an emporium modelfrom which students obtain their lectures and do their work in alab with an instructor available for assistance (Method IV). Toassess the effective of the four methods, students in each approachare given a final exam with the results shown in the followingtable. Assume an approximate normal distribution for each method.At the 5% significance level, does the data suggest that any methodhas a different mean score from the others?
| Method I | 81 | 81 | 85 | 67 | 88 | 72 | 80 | 63 | 62 | 92 | 82 | 49 | 69 | 66 | 74 | 80 |
| Method II | 85 | 53 | 80 | 75 | 64 | 39 | 60 | 61 | 83 | 66 | 75 | 66 | 90 | 93 | | |
| Method III | 81 | 59 | 70 | 70 | 64 | 78 | 75 | 80 | 52 | 45 | 87 | 85 | 79 | | | |
| Method IV | 86 | 90 | 81 | 61 | 84 | 72 | 56 | 68 | 82 | 98 | 79 | 74 | 82 | | | |
