If x=a+b then μx=μa+μb

Choices are: A. In all cases. B. Only if variables A and B are independent. C. Only if the sample was sufficiently large. D. Only if the sample was obtained randomly.
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1 Answer

x=a+b  multiplying both sides by μ we get: μx=μ(a+b)    μx=μa+μb
by Level 5 User (13.1k points)

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