Got thrown off the prospective jury pool in Palo Alto when I said "it depends" when the prosecutor asked me who's word I would trust between a police officer and an ordinary citizen. There was no physical evidence and it was going to be a she said/he said case. She said I must have a chip on my shoulder.
I don't have extensive experience with this but I've served on a jury and have been rejected for service. My sense is that they'll look for the ideal, pliant juror throughout the day but might gradually ease up as the pool gets depleted.