<P> The test statistic is approximately 1.959, which gives a two - tailed test p - value of 0.09077 . </P> <P> If the approach for equal variances (discussed above) is followed, the results are </P> <Dl> <Dd> s p ≈ 0.04849 (\ displaystyle s_ (p) \ approx 0.04849) </Dd> </Dl> <Dd> s p ≈ 0.04849 (\ displaystyle s_ (p) \ approx 0.04849) </Dd>

Degrees of freedom t test unequal sample sizes