Consider a binomial experiment with n 7 and 075 What is Px

Consider a binomial experiment with n = 7 and = 0.75. What is P(x = 3)?

Solution

Consider a binomial experiment with n = 7 and = 0.75. What is P(x = 3)?

P(X=x) = (_nC_x) p^x (1-p)^n-x   

P(X=3) = (₇C₃) 0.75⁷ (1-0.75)^7-3   

P(X = 3) = 0.0577

P(x = 3) =0.0577 ( 4 decimals)