Group

Control

Treatment

Mean

4.894308943

6.731092437

Variance

8.324803412

6.486397949

Observations

123

119

Hypothesized Mean Difference

0

df

238

t Stat

āˆ’5.25462994

p (T ā‰¤ t) one-tail

1.64699Eāˆ’07

t Critical one-tail

1.651281164