A weight-lifting coach claims that weight-lifters can increase their strength by taking
a certain supplement. To test the theory, the coach randomly selects 10 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 before and after taking the supplement are shown below:
Athlete: 1 2 3 4 5 6 7 8 9 10
Before: 220 240 190 212 175 250 205 200 180 175
After: 225 255 198 210 192 265 220 195 190 183
This sample data will be used to test the claim that the supplement is effective in increasing the
athletes' strength. (Assume a significance level of $\alpha = 0.05$)
Fill in the blanks to answer the following questions:
a) Find the p-value for the test: [pvalue]
b) Based on these calculations, the decision is to the null hypothesis.
c) Do the results of the test provide evidence to support the claim? (Answer Yes or No)