How do writers use direct characterization in a story?

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?

Which group had an easier time adapting to american life because of similar backgrounds?

The second westward surge reached the: mississippi river, appalachian mountains, oregon territory