Formula:
P(x) = (nCx)(p^x)[q^(n-x)]
Find P(0), then subtract that value from 1.
n = 12
p = .25
q = 1 - p
I'll let you take it from here.
a medication is 75% effective against a bacterial infection. find the probability that if 12 people take the medication, at least 1 person"s infection will not improve
2 answers
Good