Additive/multiplicative estimations?

Tue, Dec 30, 2008 9:30 AM

People,

If Test 1 estimates the likelihood of Population A of being Type Z as 
60% and if a completely separate and unrelated Test 2 estimates the 
likelihood of Population A of being Type Z as 70%, is the likelihood 
that Population A being Type Z raised above 70% ?

My gut feeling is that if the results of the two tests are greater than 
50% and the two tests are unrelated, the actual likelihood should be 
more than the mean of the two tests.

Thanks,

Phil.

Philip Rhoades

GPO Box 3411
Sydney NSW	2001
Australia
E-mail:  phil at pricom.com.au