130 SHINKISHI HATAI. 



We have 



a \2imt , , 



Since we adopted the fixed value for probabiHty (0.75) the 

 value of io is also fixed and equal to 0.814. Thus our problem 

 is therefore to find a value of d when the value of/* is known. 



= 0.814 



2 X 4,813 X 5,136 „ ^o 



1-, J ■^' ^— = 0.814 X 0.00709 = 0.0058. 



\ 99.493 



Deviation = 16,100 x 0.0058 = =fc 93. 



Total number of females = 16, 100 x 5,136/9,949 = 8,311 



±93- 



With this value of probability we conclude that the total 



number of females in the entire lot is neither greater than 8,404 



nor less than 8,218. 



*( 



