Panel A: Descriptive statistics | |||||||
Variables | Number of observations | Mean value | Standard deviation | Minimum value | Maximum value | ||
Mnetpro | 426418 | 31.69 | 153.5 | −140.5 | 2630 | ||
Fnetpro | 426418 | 33.09 | 154.0 | −1395 | 3273 | ||
FE | 426418 | −1.395 | 34.63 | −2775 | 2688 | ||
Panel B: Match t test |
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Variables | Number of observations | Mean value | Standard error | Standard deviation | 95% confidence region | ||
Mnetpro | 426418 | 31.69 | 0.235 | 153.5 | 31.23 | 32.15 | |
Fnetpro | 426418 | 33.09 | 0.236 | 154.0 | 32.62 | 33.55 | |
diff | 426418 | −1.395 | 0.0530 | 34.63 | −1.499 | −1.291 | |
mean(diff) = mean(Mnetpro − Fnetpro), t = −26.30 | |||||||
H0: mean(diff) = 0 Variance: 426417 | |||||||
Ha: mean(diff) < 0 Ha: mean(diff) ! = 0 Ha: mean(diff) > 0 Pr(T < t) = 0.0000 Pr(|T| > |t|) = 0.0000 Pr(T > t) = 1.0000 |