The NuTeV experiment has extracted the electroweak parameter, \sin ² \theta _W, from the high precision measurement of the ratio of neutral-current to charged-current cross-sections in deep-inelastic neutrino and anti-neutrino scattering off a steel target. Our measurement, \sin ² \theta _W^on-shell = 0.2277 \pm 00013 (stat) \pm 0.0009 (syst), is 3 \sigma above the standard model prediction. We discuss the plausibility of the hypothesis that this discrepancy is due to unaccounted QCD effects, especially a strange and anti-strange sea asymmetry. Taking into account results from NuTeV, CCFR, and charged-lepton deep-inelastic cross-section measurements, we do not find support for this hypothesis.

PACS numbers: 12.15.Ji, 12.15.Mm, 13.15.+g