A physical therapist claims that one? 600-milligram dose ofVitamin C will increase muscular endurance. The table availablebelow shows the numbers of repetitions 1515 males made on a handdynamometer? (measures grip? strength) until the grip strengths inthree consecutive trials were? 50% of their maximum grip strength.At ?=0.01 is there enough evidence to support the ? therapist'sclaim? Assume the samples are random and? dependent, and thepopulation is normally distributed.
| Repetitions ?(using placebo) | Repetitions ?(using Vitamin? C) |
|---|
1 | | 632 | | 1074 | | |
|---|
2 | | 759 | | 1000 | | |
|---|
3 | | 147 | | 213 | | |
|---|
4 | | 177 | | 190 | | |
|---|
5 | | 872 | | 1264 | | |
|---|
6 | | 790 | | 1311 | | |
|---|
7 | | 129 | | 141 | | |
|---|
8 | | 446 | | 685 | | |
|---|
9 | | 838 | | 1258 | | |
|---|
10 | | 290 | | 458 | | |
|---|
11 | | 877 | | 944 | | |
|---|
12 | | 174 | | 281 | | |
|---|
13 | | 719 | | 878 | | |
|---|
14 | | 151 | | 194 | | |
|---|
15 | | 328 | | 457 | |
|---|
1)Calculate sd (Round to one decimal place as? needed.)
2)Calculate the test statistic (Round to one decimal place as?needed.)
3)Decide whether to reject or fail to reject the null hypothesisand interpret the decision in the context of the originalclaim.
