SOLUTION: If 22% out of 100 eligable voters vote, what is the probability that fewer than 20 voted. Same question but the probability that at least 25 voted. exactly 23 voted and exactly 19

Algebra ->  Probability-and-statistics -> SOLUTION: If 22% out of 100 eligable voters vote, what is the probability that fewer than 20 voted. Same question but the probability that at least 25 voted. exactly 23 voted and exactly 19       Log On

Hi

p = .22,   n =100

P(x < 20) = 1 - P(x ≥ 20) = 1 - (1-binomcdf(100, .22, 19) = 1 -.722   = .2780

P(x≥ 25) =  1-binomcdf(100, .22, 24)= .2684

P(x = 23) = 100C23(.22)^23(.78)^77)  0r binompdf(100, .22,23) =  .0917