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Mathematics
Mathematics
Problem
Four events
W
W
W
,
X
X
X
,
Y
Y
Y
, and
Z
Z
Z
are mutually exclusive and exhaustive in a random experiment. Given
P
(
W
)
=
0.1
P(W)=0.1
P
(
W
)
=
0.1
,
P
(
X
)
+
P
(
Y
)
=
0.5
P(X)+P(Y)=0.5
P
(
X
)
+
P
(
Y
)
=
0.5
, and
P
(
Z
)
=
2
P
(
X
)
P(Z)=2P(X)
P
(
Z
)
=
2
P
(
X
)
, calculate
P
(
X
)
P(X)
P
(
X
)
. a)
0.25
0.25
0.25
b)
0.30
0.30
0.30
c)
0.20
0.20
0.20
d)
0.15
0.15
0.15
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