In an all boys school, the nights of the student body are normally distributed with a mean of 71 inches and a standard deviation of 3 inches. Using the empirical rule, what percentage of the boys are between 65 and 77 inches tall?

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Can someone check if i did this correct. it’s number 4 if you’re wondering.

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.