Four Sections of an introductory statistics course took the same 100- point exam. The means for the four sections and the number of students in each section are as follows:

42. Four sections of an introductory statistics course took the same 100-point exam. The means for the four sections and the number of students in each section are as follows: Show all of your work. Section X N 01 70.22 15 02 76.38 25 03 72.15 17 04 74.06 12