Hello,

Struggling to answer the following question:

The random variable Z has the mean -4 and standard deviation 5. Find:

E[3-2Z]

E[(3-2Z)^2]

Now, I think this is a normal distribution, Z~N(-4, 5^2).

And that E(Z) = -4, but as it has more terms in the E[], i'm a little confused on what to do!

Thanks