math
posted by bob .
a data set of size 19 has correlation coefficient of r= 0.432. Test the significance of r at the 5% level and at the 1% level

Use the appropriate degrees of freedom for a Pearson r. Check a Pearson r table for values at the .05 and .01 levels. Compare the test statistic given in the problem to the values you find in the table. Draw your conclusions from there.
I hope this will help get you started.