NETMaths
Part BCSIR NET December 2023

MLE and method of moments

The probability of a head in tossing a coin is p ∈ (0, 1). The coin is independently tossed 25 times and heads appear 10 times. The Bayes estimate of p with respect to the prior Beta(5, 5) and squared error loss is

  1. A.3/7
  2. B.3/5
  3. C.1/2
  4. D.2/5

Solution

Posterior is Beta(5 + 10, 5 + 15) = Beta(15, 20) with mean 15/35 = 3/7.

Related counterexample: The MLE is unbiased

More on this topic

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