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Prozac is a drug which is meant to elevate the moods of people who are depressed....

Prozac is a drug which is meant to elevate the moods of people who are depressed. In the following sample , mood levels were recorded before and after taking Prozac. Higher scores mean less depressed 2 psychological states. Test the claim at 1% significance that Prozac is effective in elevating mode, on average. Research has shown that the distribution of such differences is approximately normal. Interpret your result.

Before 3 0 6 7 4 3 2 1 4
After 5 1 5 7 10 9 7 11 8

Any help is appreciated

Math   Statistics-And-Probability   
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