Every research question will lead to a hypothesis, a statement that the researcher makes based on the question:

 

e.g. The age of a penguin will effect its behaviour.

 

Note that a hypothesis is not a prediction. The researcher is not judged on whether their prediction was correct or not. The research will only be judged on whether they collected the data on the animals behaviour fairly and without bias. This evidence will either support the hypothesis, or reject the hypothesis.