A(n) states a conjecture or prediction about the outcome of an experiment, which increases the risk in that it is tempting to design the study in a way that confirms the prediction. a(n) states what the researcher plans to investigate without making predictions.

The answer in the first sentence above is hypothesis because it is defined as having to state a prediction or conjecture in regards about an experiment whereas the second sentence' answer is experimental question because researchers tend to state what they plan to do in regards of their investigation and they do not apply any predictions in the experiment.

answer; /// all of the above;