Lester Hollar is vice president for human resources for a large manufacturing company

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour, to evaluate the program, he selected a random sample of 8 participants and found the number of days each was absent in the six month before the exercise program began and in the last six months. The results are as follows:
Employee before after
1 6 5
2 6 2
3 7 1 
4 7 3
5 4 3
6 3 6
7 5 3
8 6 7
At the .05 significance level , can he conclude that the number of absences has declined? Estimate the P-value.