It means that you need to find the value of such that the Probability that
{So the bounds ( endpoints of the given interval) are symmetric}
I think you can proceed from here.
Hi, just doing a past paper and came across this question on the normal distributions that I'm not too sure about.
, find such that
Normally I'd have no problem using the inverse normal function in my tables, not I'm not sure what that modulus sign does to the question?
Thanks