Which of the following is/are correct? (1) A₁ is unbiased. (II) Â₂ is unbiased. (III) Var(A₁) < Var(₂).

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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i.i.d.
Suppose that X₁,..., Xn Po(A) with n > 5. Consider the following two estimators of X:
Which of the following is/are correct?
• (1) Â₁ is unbiased.
• (11) Â₂ is unbiased.
• (III) Var(Â₁) < Var(Â₂).
Select one:
O A. None of the others
O B. (I), (II) and (III)
O C. (II) only
O D. (1) only
O E. (1) and (II) only
Â₁
Â2₂
=
n
n
Xi,
(X₁ + 4X₂ + X3).
Transcribed Image Text:i.i.d. Suppose that X₁,..., Xn Po(A) with n > 5. Consider the following two estimators of X: Which of the following is/are correct? • (1) Â₁ is unbiased. • (11) Â₂ is unbiased. • (III) Var(Â₁) < Var(Â₂). Select one: O A. None of the others O B. (I), (II) and (III) O C. (II) only O D. (1) only O E. (1) and (II) only Â₁ Â2₂ = n n Xi, (X₁ + 4X₂ + X3).
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