Question 1162425
6/0xxx
6/2x
6/4xxx
6/6
6/7x
6/8xxx
6/9x
7/0xx
7/2xx
7/4x
7/6xx
7/8x

Rotate the data 90 degrees. It doesn't appear normal. It has does have modes at 6.0, 6.4, and 6.8, and it is a little bit uniform.
mean is 6.81
median is half way between the 10th and 11th of ordered values. Both of them are 6.8, so that is the median.
range is 1.8 (7.8-6.0)

z=(x-mean)/sd
so the first is (72-70.5)/1.5 and want z>1 which is 0.1587 probability 
shorter than 67.5 inches is z<-2 or 0.0228 probability 
between 69 and 72 inches is -1<z<+1 or 0.6826 probability
95% are between +/-2 sds or +/-3 inches or (67.5, 73.5 inches)