Question 1187979
You can use the table to find the z-score by looking under the probability of ".7500" the 75th percentile, which is what the question means.
Also on calculator for 2ndVARS 3invnorm (0.75,0,1) ENTER or +0.67
z=(x-mean)/sd
0.67=(x-33.8)/1.2
0.80=x-33.8
x=34.6 cm