1. Take another look at the data from the sample below (a = 5 % = 0.05): a. Calculate in detail SSTR, SSE, SST (in 2 ways), MSTR and MSE. Also prove that there are differences in the 3 sample groups. b. Which sample groups are different? (compare Al and A2, Al and A3 and A2 and A3) with a two sample t test. c. Which is significantly equal to the expected general mean i.e. 87 (t-test 1 sample) No Subjek A1 A2 A3 1 90 90 80 80 90 70 80 70 90 100 80 80 80 80 80 OOO J Q UI A W N 80 70 70 90 70 70 90 70 70 90 60 50 10 80 60 502. Being tested the effect of 3 kinds of medical glue formula on the time of wound closure with the following data : Formula a 13 10 8 11 8 Formula b 13 11 14 14 Formula c 4 1 3 4 2 4 Calculate in detail SSTR, SSE, SST (in 2 ways), MSTR and MSE. Look for Is there a difference between the 3 sample groups