12.11 A one-way ANOVA example. A study compared five groups with six observations per group. An F statistic of 4.81 was reported.

  1. (a) Give the degrees of freedom for this statistic and the entries from Table E that correspond to this distribution.

  2. (b) Sketch a picture of this F distribution with the information from the table included.

  3. (c) Based on the table information, how would you report the P-value?

  4. (d) Can you conclude that all pairs of group means are different? Explain your answer.