Find the mean of the random variable T representing the total of the three coins in Exercise 3.25 on page 93.

Stat 260, 11/20 Class Announcements ● Today’s attendance does not count towards your grade ● It is not extra credit either, but he will take it into consideration if your grade is on the borderline Class Notes ● Begin with example from class ● X Y 73 175 68 158 67 140 72 207 62 115 ● Check ancillary files to see his graphs and specific answers ● When doing scatter plots make sure whatever your X variable, is put first, Y needs to be second ● The line of best fit is not the equation of the line ● Calculate Correlation Coefficient ● Type correl, select Xrange, Yrange ● R = 0.9062657718 ● Positive slope, positive R ● Regression plot: Select Data tab, regressio