Se sabe que los resultados de cierta prueba sanguínea se encuentran normalmente distribuídos. Indica qué porcentaje de los resultados está entre 40 y 80. μ = 60 y σ = 18

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.