In a study of women sociology majors, the following samples data were obtained on two groups, those who left their profession within six months after graduation and those who remained in their profession longer than 6 months (stayers). 103 leavers had a mean GPA of 2.81 and standard deviation 0.96. At alpha 0.05 level of significance test the clam that on average the stayers have a higher overall GPA than the leavers.Indicate our null and alternative hypothesis and explain reason for that.