For Discussion
You and your students can discuss:
1.using the Ztest1samp and Ztest2samp for large samples (n>30) or when the standard deviation(s) is/are known.
2.using the Ftest2samp for testing the standard deviations for two samples.
Additional Problem
1.The length of stay in days for 20 randomly selected hospital patients are provided below. Enter the data in L1 and test the alternate hypothesis that the average length of stay is less than 5 days.
2 | 3 | 8 | 6 | 4 | 4 | 6 | 4 | 2 | 5 |
3 | 5 | 2 | 3 | 3 | 2 | 10 | 2 | 4 | 2 |
2.The reading scores for two separate classes are provided below. Enter Class 1's scores into L1 and Class 2's scores into L2. Test the alternative hypothesis that Class 1 reads better than Class 2. Pool the standard deviations for the test.
Class 1 | 87 | 84 | 92 | 83 | 97 | 79 | 76 | 90 |
Class 2 | 82 | 78 | 86 | 78 | 94 | 78 | 71 | 86 |
