و آر ایل:https://media.cheggcdn.com/media/ee7/ee7cb76e-fa6b-49c0-b567-85c0afca0fad/php1g1puD
و آر ایل:https://www.chegg.com/homework-help/questions-and-answers/average-height-member-certain-tribe-pygmies-37-mathrm-ft-standard-deviation-02-mathrm-ft---q100369965
