Question 1082107
The z-value for 0.1500 is -1.035 from the table.
So for the middle 70%, it is between -1.035 and +1.035
z=(x-mean)/sd
1.035*sd=(x-mean)
25.875=x-mean
x=110+25.875 or 135.875 top end
x=110-25.875 or 84.125 bottom end
range of middle 70% is (84, 136) gms