The average number of goals scored per match by Team A when playing on home ground is 2.2 with a standard deviation of 1.3 while the average number of goals scored by Team B when playing away from home is 1.2 with a standard deviation of 1.64. The last 5 matches played each team are selected and it is found that the average number of goals scored by Team A is 1.9 with a standard deviation of 1.4; and the average number of goals scored by Team B is 1.3 with a standard deviation of 1.62. Using 95% confidence level, test the hypothesis that:

a) Team A is better than Team B
b) Team A and Team B are equally strong
c) Team B is better than Team A

Express answers as a percentage.