Hi Guys
I am trying to find the expected value of Y given that Y>0 and Y ~ N(-3,16)
The answer I get is not reasonable so I am trying to work out where I went wrong.
I used integration using substitution, using z = (x+3)/4 and after splitting up the integral, arrived at an integral (between 3/4 and infinity) minus 2 * P(Z>3/4)
After working out the value for E(x) I get a negative number.
Any help would be appreciated,
Thanks,
Thomas
Thankyou for your excellent manners:
1. A post of thanks.
2. A 'click' of thanks.
3. A post that let me know of your success.
4. An earlier post that gave full details of your calculations, as requested (which made it very simple for me to give you the help you needed).