Post feminism different from feminism

Use the normal model n(100,16) describing iq scores to answer the following. a) what percent of people's iqs are expected to be over 85? b) what percent of people's iqs are expected to be under 95? c) what percent of people's iqs are expected to be between 108 and 128?

How do i use this to get the right answer

Which best describes the idea behind the "invisible hand"? producers decide what to make for consumers, which guides the economy. individuals seeking their own self interest benefit the economy as a whole. government sets policy for producers and consumers, which guides the economy. consumers decide what they need and want to buy, which guides the economy.