Finding Conditional Probability in Models
Statistics and Probability · Flashcards · Recall
STATISTICS AND PROBABILITY · FLASHCARDS
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QUESTION
State the formula for
P
(
A
∣
B
)
P(A\mid B)
P
(
A
∣
B
)
using probabilities (not outcome counts).
QUESTION
In a two-way table, which cell count is the numerator for
P
(
A
∣
B
)
P(A\mid B)
P
(
A
∣
B
)
?
QUESTION
What is
P
(
A
∣
B
)
P(A\mid B)
P
(
A
∣
B
)
if
B
⊆
A
B\subseteq A
B
⊆
A
and
P
(
B
)
>
0
P(B)>0
P
(
B
)
>
0
?
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ANSWER
1
1
1
. All of
B
B
B
is in
A
A
A
, so
P
(
A
∩
B
)
=
P
(
B
)
P(A\cap B)=P(B)
P
(
A
∩
B
)
=
P
(
B
)
.
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