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In: Statistics and Probability

Hand volume can be determined by measuring the amount of water displaced in a beaker after...

Hand volume can be determined by measuring the amount of water displaced in a beaker after the hand is dipped in it. A student read a report that the median hand-volume of college-age males is 400ml. To test whether this is true at her school, she convinced 12 of her male friends to dip their hands in a beaker of water. Her measurements (in ml) are below:

400 360 420 520 460   350 500 420 450 430 395 400

  1. Report the null and alternate hypotheses for a sign test
  2. Report the number of positive and negative signs (remember this is based on a hypothesized median volume of 400 ml)
  3. Report the P value and test statistic, do you accept or reject the null hypothesis?
  4. Use a signed-rank test to re-run the analysis above.

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orchestra answered 1 year ago
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