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% confidence
interval for the difference between the means?
