If looks like Wikipedia is wrong. What is very odd is how wrong they are. I tracked back the jury composition through the whole trial and found that it was never the way the Wikipedia article claims. If a white female juror with a Hispanic-sounding name is counted as Hispanic then the jury was as Wikipedia claims only from March 1st to March 16th, 1995. This was fairly early in the 37 week trial. There were six more changes to the jury after this.
Sometime I'll have to learn how to edit or at least comment on Wikipedia articles. Generally I have been pretty happy with Wikipedia but I'll be a lot more careful about taking their word for anything after this.