Given the information below for which two samples are the means most likely to differ?

X1, X4

X2, X1

X3, X2

X4, X3

Avoid Guessing Penalty

Means of the Samples
X1	X2	X3	X4
0.178	0.444	-0.045	-0.056

Kolmogorov Smirnov Test of Normality of Sample Distributions
Sample	Statistic	P-value
X1	0.17	3.5e-05
X2	0.0528	0.634
X3	0.0398	0.909
X4	0.0666	0.338

T-test comparison of pairs of Samples
Data	t Statistic	P-value
X1 and X2	-1.82	0.0702
X2 and X3	4.82	2.05e-06
X3 and X4	0.103	0.918
X1 and X4	1.58	0.114