2 page essay

follow the request only two page, no more then 2 page , thank you. and i post some link might need use

1.https://www.khanacademy.org/math/statistics-probability/modeling-distributions-of-data/normal-distributions-library/a/normal-distributions-review

2.https://www.khanacademy.org/math/statistics-probability/modeling-distributions-of-data/z-scores/v/ck12-org-normal-distribution-problems-z-score

3.https://www.khanacademy.org/math/statistics-probability/modeling-distributions-of-data/normal-distribution-calculation/v/z-table-for-proportion-below