No hit it is a fielders choice
No because the batter had nothing to do with the runner scoring.
The fielder made a decision to throw the batter out at first instead of throwing the runner out at home. This is considered a fielders choice.
If a batted ball that a fielder has no chance to field hits a runner, the runner is called out and the batter is credited with a single.
The play is dead, the runner that was hit is out, and the batter reaches first base and is credited with a single.
Yes. On a tag play, if a runner crosses home plate before another runner is tagged for the third out the run counts.
No. Runner must reach 1st safely.
Yes as long as the runner advances Assuming you mean the runner tags up on a fly ball and advances to second, it is not scored as a sacrifice, but, simply as a fly out and the batter is charged with a time at bat. If the batter bunt a ground ball, the runner would not be required to "tag up" to advance and the batter would be credited with a sacrifice. If the batter is attempting a sacrifice bunt and pops up and the runner, tags up and somehow advances to second the batter is not credited with a sacrifice.
It does not matter what the batter did. If the runner from 3rd was in fair territory when the ball hit him -- the runner is out, batter is credited with a single and gets to go to 1st base
The courtesy runner is credited with scoring the run.
Yes.
From major league rulebook:7.03(a) Two runners may not occupy a base, but if, while the ball is alive, two runners are touching a base, the following runner shall be out when tagged and the preceding runner is entitled to the base, unless Rule 7.03(b) applies.(b) If a runner is forced to advance by reason of the batter becoming a runner and two runners are touching a base to which the following runner is forced, the following runner is entitled to the base and the preceding runner shall be out when tagged or when a fielder possesses the ball and touches the base to which such preceding runner is forced.
Nothing happens to the batter. The runner who interfered is called out.