Please help! A research firm has determined that 80% of telephone respondents will agree to answer an opinion poll. If 20 people are contacted, what is the probability that exactly 14 people agree to be polled?
A.) 8.4%
B.) 10.9%
C.) 12.4%
D.) 20.3%

a

step-by-step explanation:

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.

okay..i will pick 8!