pplement. To test the theory, the coach randomly selects 9 athletes and gives them a strength test using a bench press. Thirty days later, after regular training using the supplement, they are tested again. The results are listed below. Test the claim that the supplement is effective in increasing the athletes' strength. Use α = 0.01. Assume that the distribution is normally distributed with no outliers. Before 215 240 188 212 275 260 225 200 185 After 225 245 188 210 282 275 230 195 190

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  1. A football coach claims that players can increase their strength by taking a certain supplement. To test the theory, the coach randomly selects 9 athletes and gives them a strength test using a bench press. Thirty days later, after regular training using the supplement, they are tested again. The results are listed below. Test the claim that the supplement is effective in increasing the athletes' strength. Use α = 0.01. Assume that the distribution is normally distributed with no outliers.
Before 215 240 188 212 275 260 225 200 185
After 225 245 188 210 282 275 230 195 190

 

                  Are these independent or dependent samples? Why?

                   Hypotheses:

                   Test statistic and P-value. State calculator function used.

                     Conclusion in terms of the context.

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