The officials vary, but there are two referees and two linesman during a hockey game.
2 refs 2 linesmen
The referees are paid handsomely they get 5,000 pounds for the game.
$10 for sideline referees and $15 for the center referee per game. That is how much they usually get paid. This is a vague answer. How much you get paid depends on your organization. The higher age group you do the more you get paid.
The referees in an NFL game have a very difficult job in calling the game they are assigned to. The highest paid among the referees is unknown.
there are four two linesmen and two referees
For the most part, it keeps the player, crowd, referees and puck on the ice.
there are 4 officials in an NHL game. 2 referees and 2 linesmen
Most referees in professional rugby get paid around 50,000 dollars a year. This varies spending upon country and which team.
10.000$ per. Game
yes
Any standard whistle used by referees in any other sport will work.