I just got a new HP50g and not sure how to solve for k.
Given P(X<k)=0.9573 .....(normal distribution)
Eg. using UTPN function for P(X<1)=0.8413:
UTPN(0,1,1)=0.1587 (ie the upper tail)
So 1-0.1587=0.8413 (ie lower tail)
Any help would be appreciated.
Thanks in advance,