Mathematics, 21.05.2021 03:30 blackchina71
Two methods were used to teach a high school algebra course. A sample of 75 scores was selected for method 1, and a sample of 60 scores was selected for method 2. The results are:
Method 1 Method 2
Sample mean 85 83
Sample s. d. 3 2
Required:
Test whether method 1 was more successful than method 2 at the 1% level.
Answers: 1
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