(((Using SPSS)) The effect of Benzedrine on the heart rate of dogs (in beats per minute) was examined in an experiment o

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(((Using SPSS)) The effect of Benzedrine on the heart rate of
dogs (in beats per minute) was examined in an experiment on 14 dogs
chosen for the study. Each dog was to serve as its own control,
with half of the dogs assigned to receive Benzedrine during the
first study period and the other half assigned to receive a placebo
(saline solution). All dogs were examined to determine the heart
rates after 2 hours on the medication. After 2 weeks in which no
medication was given, the regimens for the dogs were switched for
the second study period. The dogs previously on Benzedrine were
given the placebo, and the others received Benzedrine. Again, heart
rates were measured after 2 hours. The following sample data are
not arranged in the order in which they were taken but have been
summarized by regimen. Use these data to test the research
hypothesis that the distribution of heart rates for the dogs when
receiving Benzedrine is shifted to the right of that for the same
animals when on the placebo.
A. Use a one-tailed Wilcoxon signed-rank test with α= .05
B. Use a one-tailed Mann-Whitney test with α= .05