Question

Find the probability of exactly three

successes in eight trials of a binomial
experiment in which the probability of
success is 45%.
P(3) = 8C3 (0.45)³ (0.55)8-3
Solve part of the answer.
8C3 = [?]

Answer 1

Answer: 8c3 = 56

the rest of the equation;
P(3) = 56 * (0.45)^3 * (0.55)^5

P(3) = 56 * 0.091125 * 0.05031737

P(3) = 0.257

To express this probability as a percentage, we multiply by 100:

P(3) = 25.7%

25.7% is the final answer (not 8c3)