Given that x has a Poisson distribution with u=1.4 what is the probability that x=1? p(1)= round to 4 decimal places Solution Given that x has a Poisson distribution with µ=1.4 P(x) = e^-µ * µ^k /k! here k=1 p(1) = e^-1.4 * 1.4^1 / 1! = e^-1.4 * 1.4 =1.4/e^1.4 =0.345.