Let X, X2,... be a sequential sample from the P(0) density. Suppose the stopping rule is to stop sampling at time n 2 with probability

Let X₁, X2,... be a sequential sample from the P(0) density. Suppose the stopping rule is to stop sampling at time n≥ 2 with probability [E x /Σ x], n =2,3,... (define 0/0 = 1). Suppose the first five observations are {3, 1, 2, 5, 7},and sampling then stops. Find the likelihood function for 0.