Question 971287
z=( x-66.3)/4.4
1.644 is the z value for the 95th percentile.

Multiply by 4.4 inches
7.24 inches from the mean.  That is x

66.3+7.24=73.54 inches.

95% of the population is <= 73.5inches in height.

Taller than 64 inches

z=(64-66.3)/4.4

= -(2.3)/4.4

= -.5227 

I want the percentage of the distribution greater than a z-value of -0.5227

This is 0.699 or 70% of the adults are greater than 64 inches tall.