Question
Example 1.10 (Pairwise Independent Events That Are Not Independent) Let a ball be drawn from an urn containing four balls, numbered 1, 2, 3, 4.
Example 1.10 (Pairwise Independent Events That Are Not Independent) Let a ball be drawn from an urn containing four balls, numbered 1, 2, 3, 4. Let E = {1, 2}, F = {1, 3}, G = {1, 4}. If all four outcomes are assumed equally likely, then
P(EF) = P(E)P(F) = 1/4 , P(EG) = P(E)P(G) = 1/4 , P(FG) = P(F)P(G) = 1/4
I don't understand here: why is P(EF)= 1/4?
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First Course In Mathematical Logic
Authors: Patrick Suppes, Shirley Hill
1st Edition
0486150941, 9780486150949
