550 



THE BELL SYSTEM TECHNICAL JOURNAL, MARCH 1957 



1.00 

 0.80 



0.60 

 0.50 

 0.40 



0.30 



0.20 



0.10 

 0.08 



0.60 

 0.50 

 0.04 



0.03 

 0.02 



0.0 1 



5 6 8 10 



20 30 40 50 60 80 100 



n 



200 300 400 



Fig. 6 — • Bounds for the number of units 7i required per process to guarantee a 

 probability of P* of selecting the best of four binomial processes when the true 

 difference d is at least d*. 



Table V — Values of B = |C^ to be Used with the Normal 



Approximation (8) where C is Obtained from Table I 



OF R. E. Bechhofer's Papers 



