a data set with a mean of 34 and a standard deviation of 2.5 normally distributed what data value is greater than approximately 80% of the data in this distribution

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative