Table 2. Flight simulated instrument flight evaluation
t
-test by gender
Group
Obs
Mean
Std. Dev.
95% Conf. Interval
Female
8
25.771
3.414
22.917 28.626
Male
122
20.870
7.907
19.453 22.287
Diff
-4.9014
-10.483 0.6801
diff = mean(0) - mean(1)
t
= -1.737
Ho: diff = 0 degrees of freedom =128
Ha: diff < 0
Pr(T<
t
) = 0.0423
Ha: diff != 0
Pr(|T|>|
t
|) = 0.0847
Ha: diff > 0
Pr(T>
t
) = 0.9577