Table 4.

Results of a two-sample t-test assuming unequal variances

Variable	Diff LB	Diff MLB
Mean	4.54	1.67
Variance	16.69478	5.071172
Observation	50	50
Hypothesized mean difference	0
df	76
t Stat	4.355040603
P(T< =t) one-tail	2.0516E-05
t Critical one-tail	1.6651513n 53
P(T< =t) two-tail	4.10319E-05
t Critical two-tail	1.99167261

A P-value=0.00005 <0.05 (alpha) indicates statistically significant data.

Diff: difference; LB: Lund and Browder; MLB: modified Lund and Browder.