Images and Word Recall A psychologyclass performed an
Chapter 15, Problem 31(choose chapter or problem)
Images and Word Recall A psychologyclass performed an experiment to determinewhether a recall score in which instructions to formimages of 25 words were given differs from an initialrecall score for which no imagery instructions weregiven. Twenty students participated in the experimentwith the results listed in the table.With Without With WithoutStudent Imagery Imagery Student Imagery Imagery1 20 5 11 17 82 24 9 12 20 163 20 5 13 20 104 18 9 14 16 125 22 6 15 24 76 19 11 16 22 97 20 8 17 25 218 19 11 18 21 149 17 7 19 19 1210 21 9 20 23 13 a. What three testing procedures can be used to testfor differences in the distribution of recall scoreswith and without imagery? What assumptions arerequired for the parametric procedure? Do thesedata satisfy these assumptions?b. Use both the sign test and the Wilcoxon signedranktest to test for differences in the distributionsof recall scores under these two conditions.c. Compare the results of the tests in part b. Are theconclusions the same? If not, why not?
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