The question is:

What's the chance that a .250 hitter in baseball gets at least one hit in a game. (Assume the player has five at-bats)

Firstly, I do not understand baseball so an at-bat is not in my regular vocabulary. When I first read this question I assumed the answer would be 25% because they said what is the chance he would get a hit in a game and they already mentioned that he is a .250 hitter. I know there is more to this answer as I do not feel confident at all. Can anyone help?