Question 636916
This solution is correct if height of women in a certain country (ages 20-29) is Normally Distributed.
P(Z < -0.6745) =  0.25
Therefore Z = {{{(x - 66.8)/2.89 = -0.6745}}}
              {{{ x = -0.6745(2.89) + 66.8}}}
              {{{ x = 64.85}}}
The first quartile is {{{highlight(64.85)}}}.