Question 1186950
z=(x-mean)/sd
c. 1.5/0.9=-score=1.6667
d. z<0.5/0.9 which is 0.7107
e. can do a z for <16.7 (-0.33) and one for <17.2 (+0.222) and subtract first probability from second (0.2183). OR, calculator (normalcdf(16.7,17.2,17,0.9)=0.2185. Where you round for z makes a  difference in the fourth place.
f. invnorm(0.7,0,1)=0.5244
z=(x-mean)/sd
x-mean=0.4720
answer is 17.4720 feet tall