A clinical psychology student wanted to determine

A clinical psychology student wanted to determine if
there is a significant difference in the Picture Arrangement scores (a subtest
of the WAIS-IV that some feel might tap right-brain processing powers) between
groups of right- and left-handed college students. The scores were as follows:

Picture Arrangement Scores
Left-Handed Students Right-Handed Students
12 8
10 10
12 10
14 12
12 11
10 6
8 7

a. Is
there a significant difference in the Picture Arrangement scores between the
right- and left-handed students? Useα
= .05 in making your decision. Be sure to state your hypotheses and include the
following, if necessary – test statistic, degrees of freedom, computations,
critical value(s)…

b.
What is the 95{b347ee882963fc078925bef44838eb079b614d3dde11dc0714b595823c2ade58} confidence
interval for the difference between the means?

 

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