The Sixth Amendment to the U.S. Constitution begins: “In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed…” What does this mean in practice for a defendant in a federal criminal trial?

Jurors that represent different types of people in the community are more balanced when making a decision.
Unbiased jurors are more likely to come to a fair decision in the case.
A jury must be a group of people who know the trial process and the law.
The jury must decide a case quickly, so the defendant doesn’t have to wait long for the verdict.