Apply the sign test to the data from Exercise 8 in Chapter 7, using one of the normal approximation formulas. Explain the difference in results between this exercise and the one in Chapter 7.

Data from exercise 8 (chapter 7)

For the following set of data, assume that the X score represents the participant's performance in the experimental condition and that the Y score represents the same person's performance in the control condition. (Thus, each participant serves as his or her own control.) Compute the matched t test for these data. Also compute the 95% CI for the mean of the difference scores.

Data set 3, Chapter 1 89 97 57 68 87 85 76 4 74 97 92 92 ||79 91 100 50 63 85 85 84 10 87 91 11 81 91 12 93 75 13 77 14 82 77 2. 3. 6.