Was Plato's Socrates Convicted by A Biased Jury?

It is a matter of scholarly controversy how much of Socrates' conviction for impiety and for corrupting the youth could be blamed on Socrates' own defence, on the strength of the prosecution's argument, which has not survived, and on prejudicial pre-trial slanders against Socrates. At a point in his trial Socrates was convinced, and he effectively told the jury this, that he has ably disposed of the charges brought against him and that if he is convicted, it would be the result of judicial bias, namely, of the enduring prejudicial pre-trial slanders against him. The burden of this paper is to examine the verifiability of Socrates' claim that he was convicted by a biased jury.