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# Need some help with how to answer this question. Probability based.

1. Hello,

would appreciate any help for this. Just confused as to what to say.

So we are given that Zi ~ N(0,1) and we need to state what type of distribution and parameters random variable V will have.

V = (Sum from i=1 to n) * (aiZi + bi), where ai and bi are real constants.

I've tried finding the mean by taking expectations but I get confused with the aiZi part.

I know they're looking for something like V ~ N(Mean, Variance)

Any help??
2. (Original post by Mr XcX)
Hello,

would appreciate any help for this. Just confused as to what to say.

So we are given that Zi ~ N(0,1) and we need to state what type of distribution and parameters random variable V will have.

V = (Sum from i=1 to n) * (aiZi + bi), where ai and bi are real constants.

I've tried finding the mean by taking expectations but I get confused with the aiZi part.

I know they're looking for something like V ~ N(Mean, Variance)

Any help??
Could you be a bit more specific? as in where is the aizi bit confusing you?

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