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Sidana [21]
3 years ago
15

30 students take a pre-test for their knowledge of statistics on the first day of class for the semester. Their mean score was 4

0% correct (s = 5.00). Then on the comprehensive final exam you note that their mean score was 70% correct (s = 6.00). The standard deviation of the difference between the 2 means (40 vs. 70) is 4.00.
SAT
1 answer:
yulyashka [42]3 years ago
8 0
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