someone else- It is an exclamation mark. me- well i think it would be an exclamation point because at the end of the thing it has a dot. Like a point. So i think it should be a point and not a mark....
No.But it is what you think will happen to the expirimente.g."I think the balloon will pop when I stick a pin in it."Someone else might have a different hypothesis"I think the balloon will not pop...