AS/A2
Stats 1
Stats 2
S3
Topic 1:
Combinations of random variables
Combining normal distributions 1
Summary
Remember that if X ~ N(
m
1
,
s
1
2
) and Y ~ N(
m
2
,
s
2
2
) then:
X+Y ~ N(
m
1
+
m
2
,
s
1
2
+
s
2
2
)
X-Y ~ N(
m
1
-
m
2
,
s
1
2
+
s
2
2
)
This page uses
HotEqn
.
