:1. Solution.  

 	
   observed   expected  (obs.-exp.)^2   (obs.-exp.)^2/expected 

men 	
        8         10          4                   4/10 

women     14         10         16                  16/10

children   8         10          4                   4/10  


 	
   chi-square = 24/10 = 2.4 

degrees of freedom = 3 -1 = 2

     Under the null hypothesis, the chance that chi-square  2.4
is, by the table, about 30%, which is accordingly the right
choice.