10.37 A paired-difference experiment was conducted using n = 10 pairs of observations.

a. Test the null hypothesis Ho: () = 0 against H ( )0 for a = 0.05, d=0.3, and s=0.16. Give the approximate p-value for the test.

b. Find a 95% confidence interval for (-2).

c. How many pairs of observations do you need if you want to estimate (u) correct to within 0.1 with probability equal to 0.95?