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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.
2386446425
35233210242
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
54 Statistical Tests/STATISTICS USING THE SHARP EL-9600