The prior probabilities for events A 1 and A 2 are P ( A 1 ) =0.20
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Question:
The prior probabilities for events
A1
and
A2
are
P(A1) =0.20
and
P(A2) =0.80.
It is also known that
P(A1A2) = 0.
Suppose
P(B|A1) =0.20
and
P(B|A2) =0.10.
(a)Are
A1
and
A2
mutually exclusive?They ---Select--- are are not mutually exclusive.How could you tell whether or not they are mutually exclusive?
P(A2)P(A2|A1)P(A1A2) = 0 P(A1)P(A1|A2)P(A1) +P(A2) = 1P(B|A1)P(B|A2)
(b)Compute
P(A1B)
and
P(A2B).
P(A1B)
=
P(A2B)
= (c)Compute
P(B).
(d)Apply Bayes' theorem to compute
P(A1|B)
and
P(A2|B).
(Round your answers to four decimal places.)
P(A1|B)
=
P(A2|B)
=
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