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-Identify why you choose to perform the statistical test (Sign test, Wilcoxon test, Kruskal-Wallis test). -Identify the...

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Basic Math

-Identify why you choose to perform the statistical test (Signtest, Wilcoxon test, Kruskal-Wallis test).

-Identify the null hypothesis, Ho, and the alternativehypothesis, Ha.

-Determine whether the hypothesis test is left-tailed,right-tailed, or two-tailed.

-Find the critical value(s) and identify the rejectionregion(s).

-Find the appropriate standardized test statistic. Ifconvenient, use technology.

-Decide whether to reject or fail to reject the nullhypothesis.

-Interpret the decision in the context of the originalclaim.

A weight-lifting coach claims thatweight-lifters can increase their strength by taking vitamin E. Totest the theory, the coach randomly selects 9 athletes and givesthem a strength test using a bench press. Thirty days later, afterregular training supplemented by vitamin E, they are tested again.The results are listed below. Use the Wilcoxon signed-rank test totest the claim that the vitamin E supplement is effective inincreasing athletes' strength. Use ? = 0.05.

Athlete

1

2

3

4

5

6

7

8

9

Before

185

241

251

187

216

210

204

219

183

After

195

246

251

185

223

225

209

214

188

Answer & Explanation Solved by verified expert
4.0 Ratings (699 Votes)
NULL HYPOTHESIS H0 the vitamin E supplement    See Answer
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