how do you do step 3 of the 5 step model of hypothesis testing

3) You are a social demographer interested in the association between women's education and fertility in countries classified by the UN as "least developed countries" (LDCs). You select a random sample of 15 countries. The variables are fertility rate (average number of children born to each woman) and education for females (percentage of all students at the secondary school level who are female). You compute a correlation of r = -.38. You want to know if this correlation is significantly different from 0? Orandom sample . level of measurement is interval-ratio Bivariate normal distributions . linear relationship homoscedasticity . sampling distribution is normal for two tailed test