Wages expectation as a finance intern

I am searching for a finance intern position. I have an interview coming up. I have a good feeling they will offer me the position. I am knew to the whole job searching process, but how do I go about my pay expectations if it comes up? On glass door there are a few intern wages posted and the average is $20 an hour. They are a Fortune 500 company so I expect a decent amount of pay, but I feel like asking for $20 an hour may be a bit high. However, I do not want to settle for something too low. Any advice?

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