I was offered a job as a free lancer market research analyst in NYC. How much per hour, Im little experience?

I'm a recent college grad with a 6 month internship in the field. I do have over 20 years of work experience. I'm a mature women.

I was offered a job as a free lancer market research analyst in NYC. How much per hour, Im little experience?
You can check salary.com for more info how much people in this field should be making.