SAMPLE 1 1 
* Part (a)
GEN1 ANSWER = 1 - NCDF((1000-1200)/100)
PRINT ANSWER

* Part (b)
GEN1 ANSWER = NCDF((1300-1200)/100) - NCDF((1100-1200)/100)
PRINT ANSWER

* Part (c)
* Compute the variance of X
GEN1 SIG2=100**2
GEN1 PROB=.1
DISTRIB PROB / TYPE=NORMAL MEAN=1200 VAR=SIG2 INVERSE CRITICAL=ANSWER
PRINT ANSWER
STOP