9 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 -8 -13 -15 1/10 -13 -19 -17 - 9 points awarded -10 -9 -15 -8 -13 -20 -20 Scored picture Click here for the E a. Calculate the grand mean. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.) Grand mean b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.) SSTR MSTR c. Calculate SSE and MSE. (Round final answers to 4 decimal places.) SSE MSEd. Specify the competing hypotheses in order to determine whether some differences exist between the population means. O HO: MA 2 MB 2 MC; HA: Not all population means are equal. HO: MA S UB S MC; HA: Not all population means are equal. x 1/10 OHO: MA = MB = Mc; HA: Not all population means are equal. points awarded Scored e-1. Calculate the value of the F(df1, df2) test statistic. (Round final answer to 3 decimal places.) Test statistic e-2. Find the p-value. O 0.01 Picture p-value