A random sample of five observations from three normally distributed populations produced the following date: (You may find it useful to reference the /table.) Treatments 25 15 15 28 37 FA - 23.2 If - 18.8 37 - 25.4 - 13.2 81 - 17.2 8 - 15.3 picture Click here for the Excel Doto File a. Calculate the grand mean. (Round final answer to 4 decimal places.) Grand mean b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.) SSTR MSTR . Calculate SSE and MSE. (Round final answers to 4 decimal places.) SSE MSE d. Specify the competing hypotheses in order to determine whether some differences exist between the population means. Ha: MA - HB - Mci HA: Not all population means are equal. Ha: HA S Hg S Mci MA: Not all population means are equal. Ha: HA 2 Hg 2 Mci HA: Not all population means are equal. e-1. Calculate the value of the F(dy, of2) test statistic. (Round final answer to 3 decimal places.) Test statistic e-2. Find the p-value. O 0.05 s p-value