Question 1133710
The middle 38% of scores is 19% on each side of the mean or between 0.3100 and 0.6900.
This is between z=-0.495 and z=+0.495
z=(x-mean)/sd
-0.495=(x-170)/2
-.99=x-170
x=169.01 lower
x=170.99 higher
[169.01, 170.99] or [169.0, 171.0]