60. Refer to the Schools data set in Appendix M, which refers to the 94 school districts in northwest Ohio. Divide the school districts into two groups. Include all schools with less than 2,000 students (small districts) in one group and those with 2,000 or more (large districts) in the other.
a. Compute the mean teacher salary for the two groups. At the .05 significance level, can we
conclude that the mean teacher salary is higher in the larger school districts?
The solution gives step by procedure for the computation of mean salary of teachers from two districts.