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, 8 of whom are females, by how much does the index for the females exceed the index for the males in the group?
Pick: A) 0.05 B) 0.0625 C) 0.2 D) 0.25 E) 0.6
<gadget id="calculator">20 - 8</gadget>
<output>12</output>

<gadget id="calculator">12 / 20</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">8 / 20</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<result>C</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, 8 of whom are females, by how much does the index for the females exceed the index for the males in the group?
subtract(divide(subtract(20, 8), 20), divide(8, 20))
index for females = ( 20 - 8 ) / 20 = 3 / 5 = 0.6 index for males = ( 20 - 12 / 20 = 2 / 5 = 0.4 index for females exceeds males by 0.6 - 0.4 = 0.2 answer : c