Since E(X) _______X is said to be unbiased estimator of the population mean?
Correct answer: D. u
- A. Q
- B. X
- C. Ux
- D. u
Explanation
A sample mean is unbiased for the population mean when its expected value equals that population mean, written E(X̄) = μX. The symbol rendered as “u” in option d is evidently the Greek letter μ.
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