Question

In a study of women science majors, the following sample data were obtained on two groups, those who left their profession within a few months after graduation (leavers) and those who remained in their profession after they graduated (stayers). Test the claim that those who stayed had a higher science grade point average than those who left. Use α = 0.05.

Stayers	Leavers
x̄1 = 3.28	x̄2 = 3.16
s1 = 0.46	s2 = 0.52
n1 = 225	n2 = 103

i. Calculate the test statistic.

ii. Find the critical value.

Answer 1