Find the null and alternative hypotheses, Type I and Type II Error and determine whether the alternative hypothesis is directional or non-directional

Question

Samantha sees an advertisement for a new energy drink that claims to significantly increase your energy during workouts, as compared to people who drink only water during workouts. She decides to test this hypothesis.

Answer 1

The null hypothesis is that a new energy drink does not change your energy during workouts.

The alternative (experimental) hypothesis is that the new energy drink significantly increases your energy during workouts. This is a directional hypothesis because it predicts an increase, as opposed to just predicting a change (increase OR decrease).

A type 1 error would be rejecting the null when it should be accepted and a type 2 error would be accepting the null when it should be rejected.