And if you want a 99.99% confidence upper bound, it's (384-88+19)/384 == 82%. (the .01% is the probability of false negatives in the survey data). Again, pedant

And if you want a 99.99% confidence upper bound, it's (384-88+19)/384 == 82%. (the .01% is the probability of false negatives in the survey data). Again, pedantic, true, and useless, but cited for balance.