In order to prove/disprove the null hypothesis that there is no salary discrimination, you obtain random samples of male and female employees in your company. From the sample of 30 men you find an average yearly salary of $ 60,000 (standard deviation $ 4,000). From the sample of 30 women you find an average salary of $ 58,500 (standard deviation $ 5,000). Your research hypothesis is that the mean salaries for men and women are different.
Draw your conclusion at significance level 0.05.