Statistical significance

[davywavy]

It's been 15 years since I did any stats work and I'm damned if I can remember how to do it now.

If I have an audience size of about 22,000 people, how many would I need to survey to get results significant to first 5% and then 1%?
Any thoughts on how I can work this out?

Comments

Stats through Beer

[applez.livejournal.com]

Drink 5 pints of beer with a standard deviation of 1 pint - and all statistical questions are resolved. ;-)

Go on, you know that's exactly what you were doing 15 years ago. Don't pretend otherwise. ;-p