:1. Solution.   <p>

observed   expected  (obs.-exp.)^2   (obs.-exp.)^2/expected  <p>

men 	
        8         10          4                   4/10  <p>

women     14         10         16                  16/10 <p>

children   8         10          4                   4/10   <p>

chi-square = 24/10 = 2.4  <p>

degrees of freedom = 3 -1 = 2 <p>

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