# Question: If X1 and X2 constitute a random sample of size

If X1 and X2 constitute a random sample of size n = 2 from a Poisson population, show that the mean of the sample is a sufficient estimator of the parameter λ.

## Relevant Questions

If X1, X2, and X3 constitute a random sample of size n = 3 from a Bernoulli population, show that Y = X1 + 2X2 + X3 is not a sufficient estimator of θ. Consider special values of X1, X2, and X3.) If X1, X2, . . . , Xn constitute a random sample of size n from a population given by Find estimators for ∂ and θ by the method of moments. This distribution is sometimes referred to as the two-parameter exponential ...Given a random sample of size n from a normal population with the known mean µ, find the maximum likelihood estimator for σ. Show that X + 1 / n + 2 is a biased estimator of the binomial parameter θ. Is this estimator asymptotically unbiased? With reference to Example 10.3, find an unbiased estimator of d based on the smallest sample value (that is, on the first order statistic, Y1). Example 10.3 If X1, X2, . . . , Xn constitute a random sample from the ...Post your question