Table 6. Basic flight training performance t-test by engineering major

Group	Obs	Mean	Std. Dev.	95% Conf. Interval
Non-engin	85	95.87423	2.45598	95.3444996.40398
Engineer	20	96.7685	2.92786	95.3982298.13878
Diff		-.8942657		-2.150942.3624106
diff = mean(0) - mean(1)Ho: diff = 0			t = -1.4113degrees of freedom = 103
Ha: diff < 0Pr(T < t) = 0.0806		Ha: diff != 0Pr(|T|>|t|) = 0.1612		Ha: diff > 0Pr(T > t) = 0.9194