Group 1 Mean:

Group 2 Mean:

Group 1 Standard Deviation:

Group 2 Standard Deviation:

Numerator:

Denominator:

T-Statistic:

Degrees of Freedom:

Critical Values (two-tailed, alpha = 0.05):

- t
_{0.025, df}= - t
_{0.005, df}= - t
_{0.001, df}=

The groups are .

Formula: t = (group1Mean - group2Mean) / sqrt((group1SD^2 / n1) + (group2SD^2 / n2))

where:

- group1Mean is the mean of group 1
- group2Mean is the mean of group 2
- group1SD is the standard deviation of group 1
- group2SD is the standard deviation of group 2
- n1 is the sample size of group 1
- n2 is the sample size of group 2