If the probability of A not appearing over a time interval is p, and the probability of B not appearing over the same time interval is q, what is the probability of both not appearing? Is it pq or p+q?

greenink 22/06/20.

greenink Jun 22, 2020

#1**0 **

If they are independent events, multiply the probabilities.

The reason that adding is not appropriate:

-- consider this case:

-- assume that the probability of A not appearing is 0.90

-- assume that the probability of B not appearing is 0.80

-- if you added them together, you would get a probability of 1.70, an impossibilit.

geno3141 Jun 22, 2020