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<p>30% sounds a little high to me but it’s not unthinkable. If I had to guess I’d guess somewhere between 20 and 25%. </p>
<p>Also, what makes you think someone starting in CoE has to know they want to be an engineer any more than someone starting in LSA has to know they want to study Liberal Arts? CoE is general in the same way LSA is, which is different than the other colleges.</p>