Engineers must consider the breadths of male heads when
designing motorcycle helmets.Mean have head breadths that are
normally distributed with a m = 5.0 in. and a s = 1.0 in. Due to
financial constraints, the helmets will be designed to fit all men
except those with head breadths that are in the smallest 2.5% and
largest 2.5%. Find the minimum and maximum head breadths that the
helmets will fit.





