Question 35. Let X be a random variable defined by the density function aga f(r) ={a+1 , if a2B else with parameters a >0 and 8 > 0. We observe a sample {3,4,8}. Which of the following statements are correct? a) The expected value of X exists for all combinations of a and 8. b) The expected value does only depend on a, but not on 3. c) Given the sample, 8 can not be larger than 3.

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