Refer to Exercise 18.5. a. Repeat the analysis using the normal approximation. b. How well do the two answers (18.5a and 18.6a) agree? Why do they not agree exactly? How would you go about applying...

Refer to Exercise 18.5.

a. Repeat the analysis using the normal approximation.

b. How well do the two answers (18.5a and 18.6a) agree? Why do they not agree exactly?

How would you go about applying a resampling procedure to test the difference between Before and After scores in Exercise 18.6?