Assignment:
Radio advertisements have been stressing the virtues of an audiotape program to help children learn to read. To test whether this tape program can cause a quick improvement in reading ability, 10 children were given a nationally recognized reading test that measures reading ability. The same 10 children were then given the tapes to listen to for 4 hours spaced over a 2-day period. The children then were tested again. The test scores were as follows:
| Child |
Before |
After |
| 1 |
60 |
69 |
| 2 |
40 |
38 |
| 3 |
78 |
77 |
| 4 |
53 |
50 |
| 5 |
67 |
74 |
| 6 |
88 |
96 |
| 7 |
77 |
80 |
| 8 |
60 |
70 |
| 9 |
64 |
65 |
| 10 |
75 |
75 |
If higher scores are better, use the Wilcoxon matched pairs signed rank test to test whether this tape program produces quick improvement in reading ability. Use an α = 0.025.
Provide complete and step by step solution for the question and show calculations and use formulas.