  The authors of the OPERA experiment [arXiv:1109.4897] claim that "the
measurement indicates an early arrival time of CNGS muon neutrinos with respect
to the one computed assuming the speed of light in vacuum". In this note we
analyze the statistical aspects of the experimental results presented in
[arXiv:1109.4897], assuming that no hidden experimental bias exists. Due to
statistical constraints, we show (through two different methods) that the
experimental data presented in [arXiv:1109.4897] do not permit to conclude
unambiguously with the existence of a superluminal behavior of neutrinos. The
problem lies essentially in the interpretation of the data and not in their
veracity.
