Example of men and women’s GPA  we don’t reject the null that men and women have equal gpa’sslide 52: answer is A, p > 0.2, because there was a very very small t valuecheck the last page, page 54 of the unit 9 notes, for the concepts we went over in this chapterExample: data collected from students in lecture (salary in thousands that students would be content with)null hypothesis: mean for men and women would be the sametwo-sided alternative hypothesis: the mean for men and women would be differentfirst step: make a histogram of the scores for women and for menwomen: n=27, mean=80, sd=70men: n=9, mean=69, sd=22female: sample 1, male: sample 280-69/sqrt of 70^2/27 + 22^2/911/15.4 = 0.7 = tdegrees of freedom: 8t(8)=0.7, p>0.46p is > 0.2men and women do not significantly differ in the salary that would make them happyno good evidence against the null, can't reject the null hypothesisthe difference between the means of women and men is zeroH0: Mf = Mm (females and males are equal)Hypothesis Testing with Two Means 04/16/2014-Example of men and women’s GPA  we don’t reject the null that men and women have equal gpa’s-slide 52: answer is A, p > 0.2, because there was a very very small t value-check the last page, page 54 of the unit 9 notes, for the concepts we wentover in this chapter -Example: data collected from students in lecture (salary in thousands thatstudents would be content with)-null hypothesis: mean for men and women would be the same-two-sided alternative hypothesis: the mean for men and women would be different-first step: make a histogram of the scores for women and for men-women: n=27, mean=80, sd=70-men: n=9, mean=69, sd=22 -female: sample 1, male: sample 2-80-69/sqrt of 70^2/27 + 22^2/9-11/15.4 = 0.7 = t -degrees of freedom: 8-t(8)=0.7, p>0.46-p is > 0.2-men and women do not significantly differ in the salary that would make them happy -no good evidence against the null, can't reject the null hypothesis -the difference between the means of women and men is zero-H0: Mf = Mm (females and males are