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Q:exactly one of the events A and B occurs?



event A occurs only = p(1-q)
event B occurs only = (1-p)q

then = p-pq+q-pq
= p+q-2pq

by trisai

Tue Dec 09, 2008 9:49 pm
Forum: Problem Solving
Topic: Probability
Replies: 3
Views: 1546