3. Seven samples of individuals were selected randomly from three communities. The ages of the persons were tabulated. Is there a signicant difference in the ages? Community A Community B Community C age 16 65 45 15 43 30 25 77 22 30 90 66 39 83 47 20 69 33 1'." 73 51 162 500 293 955.00 (grand total) 23.14 71.43 41.86 45.48 (grand mean) 1) State the hypotheses. 2) What are D\" and Df. ? c wrcn Within 3) What is your critical F value based on degrees of freedom of between groups and within groups? 4) Calculate F. 5) What is your conclusion based on your calculated F and critical F