The prediction is a statement of the expected results of the experiment based on the hypothesis.
Predictions provide a reference point for the scientist.
If predictions are confirmed, the scientist has supported the hypothesis. If the predictions are not supported, the hypothesis is falsified. Either way, the scientist has increased knowledge of the process being studied. The scientist may now wish to identify this point specifically, i.e., find the optimum amount of fertilizer to apply. The scientist may also want to extend the research to a new direction and find out why higher fertilizer applications actually cease having an effect on the number of beans produced.