You have access to data on 400 4th grade students in Michigan. 200 of these students are enrolled in charter schools and 200 are enrolled in traditional public schools. (A charter school is a publicly funded school that operates independently of traditional school districts to provide increased consumer choice and competition.) Average test scores of the two groups are given below, with the respective standard deviations. The subscripts R and D denote information for the chaRter schools and traDitional schools, respectively. Y _R=92 Y _D=86 _R=8 _D=20 What is the null and alternative hypothesis pair for testing if the mean outcome for charter schools is statistically larger than the mean outcome for traditional schools