12.15 Calculating the ANOVA F test P-value, continued. For each of the following situations, find the F statistic and the degrees of freedom. Then draw a sketch of the distribution under the null hypothesis and shade in the portion corresponding to the P-value. State how you would report the P-value.

  1. (a) Compare three groups with 21 observations per group, MSE = 50, and MSG = 340.

  2. (b) Compare eight groups with six observations per group, SSG = 77, and SSE = 190.