The method 30, wherein said probability is determined by: ##EQU6## where Φ represents {HEAD ~ a density equation} of {TAIL ~ standard normal distribution} 
The method 30 , wherein said probability is determined by : # # EQU6 # # where Φ represents { HEAD ~ a density equation } of { TAIL ~ standard normal distribution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL