Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows.

Person Dexterity Anxiety

1 1 10

2 1 8

3 2 4

4 4 _2

c) Figure the correlation coefficient;

d) Figure whether the correlation is statistically significant

(Use the .05 significance level, two-tailed);

t needed (df = 2 p .05) =

r =

t =

Decision:reject the null hypothesisordo not reject the null hypothesis