Could you also help me find the test statistic and the answers for A through C? Thank you

Exercise 13-1 Algo A random sample of five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) Treatments A B 28 25 27 22 19 23 20 15 30 26 15 20 20 27 IA = 23.2 TB = 18.8 IO = 25.4 SA = 13.2 $13 = 17.2 SC = 15.3 Click here for the Excel Data File ence: a. Calculate the grand mean. (Round Intermediate calculations to at least 4 decimal places and final answer to 4 decimal places.) Grand mean 22.4687 b. Calculate SSTR and MSTR. (Round Intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) SSTR MSTR C. Calculate SSE and MSE. (Round Intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) SSE MSE