How do u do the combining sample qn? The first qn, 5 marks wan? Pls hlp, thx

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junior college 2 | H1 Maths
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junior college 2 H1 Maths

How do u do the combining sample qn? The first qn, 5 marks wan? Pls hlp, thx

Date Posted: 6 years ago

Tham KY

6 years ago

Try E(combined) = E(X) + E(Y),
Var(combined) = Var(X) + Var(Y)...