For a group of n people, k of whom are of the same sex, the (n-k)/n expression yields an index for a certain phenomenon in group dynamics for members of that sex. For a group that consists of 20 people, 6 of whom are females, by how much does the index for the females exceed the index for the males in the group?	Choose the correct choice from the following:
A) 0.4
B) 0.0625
C) 0.2
D) 0.25
E) 0.6
Index for females = (20-6)/20 = 7/10= 
<gadget id="calculator">7/10</gadget>
<output>7/10 = around 0.7</output>
0.7   Index for males= (20-14/20 = 3/10= 
<gadget id="calculator">3/10</gadget>
<output>3/10 = around 0.3</output>
0.3   Index for females exceeds males by   0.7 - 0.3= 
<gadget id="calculator">  0.7 - 0.3</gadget>
<output>0.4</output>
0.4   0.4nswer: 0.4
<result>A</result>
For a group of n people, k of whom are of the same sex, the (n-k)/n expression yields an index for a certain phenomenon in group dynamics for members of that sex. For a group that consists of 20 people, 6 of whom are females, by how much does the index for the females exceed the index for the males in the group?