Can I quote statistics as "This is what I was told and I was inclined to believe?"

There's probably a reason I'm failing my stats class.

Okay, so I pulled a number out of the air from what I had been told in the past. The number is still abysmally low, like Neisan stated. I will honestly state that I am not the right person to quote statistics. I apologize for using a number I have no proof to back up. =(