Exercise 13-2 Algo Random sampling from four normally distributed populations produced the following data: (You may find it useful to reference the F table.) Treatments A B C D -8 -13 -15 -13 -19 -17 -10 -9 -15 -13 -20 -20 Click here for the Excel Data File a. Calculate the grand mean. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.) x Answer is complete but not entirely correct. Grand mean -12.48 X b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.) x Answer is complete but not entirely correct.b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.) x Answer is complete but not entirely correct. SSTR 182.7507 X MSTR 60.9169 X c. Calculate SSE and MSE. (Round final answers to 4 decimal places.) Answer is complete and correct. SSE 89.5332 MSE 8.1394 d. Specify the competing hypotheses in order to determine whether some differences exist between the population means.d. Specify the competing hypotheses in order to determine whether some differences exist between the population means. OHO: HA 2 HB > HC; HA: Not all population means are equal. OHO: HA S HB S HC; HA: Not all population means are equal. HO: HA = HB = HC; HA: Not all population means are equal. e-1. Calculate the value of the F(df1, of2) test statistic. (Round final answer to 3 decimal places.) x Answer is complete but not entirely correct. Test statistic 7.484 X e-2. Find the p-value. 0.01 2 p-value