If both criteria are met, then the argument is sound. This means there is no possible way that the conclusion can be false. Any argument which is intended to give some support, but not definitive support for the conclusion. An important characteristic of inductive arguments is that it is always possible to have an argument where the premises are true, but the conclusion is false. One hopes that the conclusion is true, but it might not be.
Probability is always a factor with inductive arguments.
Therefore, it is likely that the next president will be a man. The premise in this argument is true. However, it is easy to see that it is possible that a woman will be the next president. So, even though the premise is true, it is possible for the conclusion to be false. Therefore, it is likely that Donaldson will win.