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Lecture 9 – Chapter 2
Monday, September 22
th
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View Full Document Independence
±
Two events A and B are
independent
if
and they are
dependent
otherwise.
±
That means they are independent if
knowing that event B has occurred this
doesn’t affect the probability of event A to
happen
( ) ( )
/
PAB
PA
=
Strange fact
±
Why in the definition of independence we
do not require at the same time that
?
( ) ( )
/
P
BA
P
B
=
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View Full Document Example 2.31 page 84
Independence
±
If A and B are independent then:
²
A and B
c
are independent
²
A
c
and B are independent
²
A
c
and B
c
are independent
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View Full Document Proposition
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This note was uploaded on 09/23/2009 for the course STAT 318 taught by Professor Staff during the Fall '08 term at Pennsylvania State University, University Park.
 Fall '08
 staff
 Probability

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