In: Statistics and Probability
Again, there is research on the relationship between gender and
sense of direction. Recall that, in...
Again, there is research on the relationship between gender and
sense of direction. Recall that, in their study, the spatial
orientation skills of 30 male and 30 female students were
challenges in a wooded park near the Boston College campus in
Newton, Massachusetts. The participants were asked to rate their
own sense of direction as either good or poor.
In the park, students were instructed to point to predesignated
landmarks and also to the direction of south. For the female
students who had rated their sense of direction to be good, the
table above provides the pointing errors (in degrees) when they
attempted to point south.
- If, on average, women who consider themselves to have a good
sense of direction do not better than they would by just randomly
guessing at the direction of south, what would their mean pointing
error be?
- At the 1% significance level, do the data provide sufficient
evidence to conclude that women who consider themselves to have a
good sense of direction really do better, on average, than they
would by just randomly guessing at the direction of south? Use a
one-mean t-test.
- Obtain a normal probability plot, boxplot, or
stem-and-leaf diagram of the data. Based on this plot, is use of
the t-test reasonable? Explain your answer.