Question 984347
The probability of a voter supporter FVPP is 0.6. Find the probability that in a random sample of 8 voters there are:
 
Let X = number of FVPP supporters in a random sample of 8 voters

X~Binomial(n = 8, p=0.6)

a) AT least 2 supporters 

P(X ≥ 2) = {{{sum((matrix(2,1,8,x))(0.6^x)(0.4^(8-x)),x=2,8)}}} = {{{highlight(0.99148)}}}


b) more than 5 supporters

P(X > 5) = {{{sum((matrix(2,1,8,x))(0.6^x)(0.4^(8-x)),x=6,8)}}} = {{{highlight(0.31539)}}}