For Exercises 18 and 19, use level of significance to do the following for the indicated data:

  1. Test for interaction. Confirm that the result agrees with the interaction plot you constructed.
  2. If appropriate, test for the Factor A effect.
  3. If appropriate, test for the Factor B effect.

Question 12.159

19. Data in Exercise 17

12.99.19

(a) : There is no interaction between carrier (Factor A) and type (Factor B). : There is interaction between carrier (Factor A) and type (Factor B). Reject if the . The , which is ; therefore we reject . There is evidence of interaction between carrier (Factor A) and type (Factor B) at level of significance . This result agrees with the interaction plot in Exercise 17. (b) Not appropriate (c) Not appropriate