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decus_20tap1_198111
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decus/20-0025/dbinom.for
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C GENERATE A BINOMIAL SAMPLE WITH PROBABILITY P AND
C GIVEN SAMPLE SIZE(LESS THAN 100)
DIMENSION LSAMP(100)
K=314159267
LETH='H'
LETT='T'
TYPE 1000
1 TYPE 1001
ACCEPT 1002,N,P
SN=N
IF(SN*P) 2,2,3
2 CALL EXIT
3 N=MIN0(MAX0(1,N),100)
P=AMIN1(AMAX1(.0001,P),.9999)
NHEAD=0
NTAIL=0
DO 6 I=1,N
IF(P-RAND(K))5,5,4
4 NHEAD=NHEAD+1
LSAMP(I)=LETH
GO TO 6
5 NTAIL=NTAIL+1
LSAMP(I)=LETT
6 CONTINUE
TYPE 1006,NHEAD,NTAIL,(LSAMP(I),I=1,N)
GO TO 1
1000 FORMAT(' GENERATE A RANDOM SAMPLE OF HEADS AND
1 TAILS'/' FROM A BINOMIAL DISTRIBUTION WITH
2 GIVEN P')
1001 FORMAT(/' GIVE N AND P',$)
1002 FORMAT(I,F)
1006 FORMAT(' SAMPLE HAS',I3,' HEADS AND',I3,' TAILS'/
1(10X,20A2))
END