Question #289410

A discrete random variable x has an expected value of 45 and variance of 16. Let us say we double every x's within the probability distribution. What will be the new variance?

1
Expert's answer
2022-01-24T02:49:51-0500

Var(x)=16Var(2x)=22var(x)=4×16=64Var(x)=16\\Var(2x)=2^2var(x)\\ =4\times 16=64


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