Answer:
0.94
Explanation:
Computation for what is the probability that AT LEAST ONE of them has been vaccinated
Based on the information given this is a binomial Distribution therefore Let;
Number of people represent n= 3 people
Population represent p = .61
Using this formula
Probability(AT LEAST ONE vaccinated) = 1 - [ 1*(1-Population vaccinated^People randomly selected)]
Let plug in the formula
Probability(AT LEAST ONE vaccinated) = 1 -[1*(1-.61^3)]
Probability(AT LEAST ONE vaccinated) = 1 - [1×(1-.61^3)]
Probability(AT LEAST ONE vaccinated) = 1 - (1×.39^3)
Probability(AT LEAST ONE vaccinated) = 1 - 0.059319
Probability(AT LEAST ONE vaccinated) = 0.940681
Probability(AT LEAST ONE vaccinated) = 0.94
Therefore the probability that AT LEAST ONE of them has been vaccinated is 0.94