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<p>You have no way to know. I doubt that they’re biased, but even if they are, there’s nothing you can do about it. It does you no good to fret over this issue.</p>
<p>Worry about things that are within your control. If you want to be a competitive applicant, you should be working on essays and using your time productively this summer. This issue just isn’t worth the time and attention you’re giving it.</p>