Conditional Probability
AP Statistics · Flashcards
AP STATISTICS · FLASHCARDS
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QUESTION
What does
P
(
A
∣
B
)
=
0
P(A|B) = 0
P
(
A
∣
B
)
=
0
imply?
QUESTION
Identify the type of probability:
P
(
A
∣
B
)
P(A|B)
P
(
A
∣
B
)
.
QUESTION
Determine
P
(
A
∣
B
)
P(A|B)
P
(
A
∣
B
)
if
P
(
A
∩
B
)
=
0.28
P(A \cap B) = 0.28
P
(
A
∩
B
)
=
0.28
and
P
(
B
)
=
0.7
P(B) = 0.7
P
(
B
)
=
0.7
.
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ANSWER
P
(
A
∣
B
)
=
0.4
P(A|B) = 0.4
P
(
A
∣
B
)
=
0.4
. Using
P
(
A
∣
B
)
=
0.28
0.7
=
0.4
P(A|B) = \frac{0.28}{0.7} = 0.4
P
(
A
∣
B
)
=
0.7
0.28
=
0.4
.
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