Answer:
C (.35) on edge2021! :)
Step-by-step explanation:
for this problem we use the formula P(X = k) = (n over k)p^k(1-p)^n-k and in this case,
k = 5
n = 6
p = .90
and (n over k), n choose k, is calculated by (n! / k!(n-k)!) or just look up "6 choose 5" and you'll figure out that it's equal to 6.
so you end up with P(X = 5) = 6(.90)^5(1-.90)^6-5 which will give you .35 when put in a calculator.
