Given what we know, we can confirm that Charlie may be able to test her hypothesis by gathering patients with a known history of depression and measuring their cortisol levels, then comparing them with healthypatients.
<h3>How are hypotheses evaluated?</h3>
A hypothesis is evaluated by gathering and comparing data.
This is done in order to reach a conclusion.
The data is gathered through testing.
The data required to test this hypothesis can be gathered through patients with a history of depression.
Therefore, we can confirm that the data required to evaluate this hypothesis can be achieved by gathering patients with a known history of depression and comparing their levels of cortisol to that of healthy patients.