Test Value = 0

T

Df

Sig. (2-tailed)

Mean Difference

95% Confidence Interval of the Difference

Lower

Upper

Post-test Control Group

56.935

39

.000

49.47500

47.7173

51.2327

Post-test experimental Group

147.558

39

.000

57.10000

56.3173

57.8827