please don't copy, thx Question 2. Consider the model Yij = uị + Rij, Rij~N(0,02), i...
please don't copy. thx Question 1. Consider the model Yij = Mi + Rij, Rij~N(0,02), i = 1,2;j = 1,2, ..., Ni. 222(Y1j-81+)? Part A. Show that Sị is an unbiased estimator of o2. Part B. Show that the pooled estimate of o2 is unbiased. n1-1
Part D. The average grade of 32 Nano Engineering students in STAT 353 is 75% with a standard deviation of 5%. The average grade of 27 Mech Engineering students in STAT 353 is 78% with a variance of 36%. Students are either in Mech or in Nano. Assuming the standard deviation between the two groups is the same, build a 95% confidence interval to compare the difference in the means of the two groups.