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 table.) Treatments 8 - 38.7 53 - 34.7 80 = 4.7 picture Click here for the Excel Data File . Calculate the grand mean. (Round final answer to 4 decimal places.) Answer is complete but not entirely correct. Grand mean 26.0667 6 b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.) points & Answer is complete but not entirely correct. SSTR 116.1332 x MSTR 58.0666 c. Calculate SSE and MSE. (Round final answers to 4 decimal places.) Answer is complete and correct. SSE 312 3990 MSE 26.0330 points d. Specify the competing hypotheses in order to determine whether some differences exist between the population means. He: MA = HB = HC; HA: Not all population means are equal. He: HA S HB S MC; HA: Not all population are equal . He: HA 2 HB 2 MC; HA: Not all population mean e equal. e-1. Calculate the value of the F(df1, of2) test statistic. (Round final answer to 3 decimal places.) Answer is complete and correct. Test statistic 3.096 points e-2. Find the p-value. 0.05 s p-value