Suppose X1, .., Xn, for n > 1, are sampled independently from a distribution with mean u and variance o Consider the following four estimators for µ.

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Suppose X1,., Xn, for n > 1, are sampled independently from a distribution with mean u and variance o?.
Consider the following four estimators for
X1+ Xn
2
X1
2
п(п + 1)
i=1
a. Calculate the bias of each of these estimators.
b. Calculate the standard error for each estimator.
c. Which estimator would you choose to use? (Give a reason for your choice).
Transcribed Image Text:Suppose X1,., Xn, for n > 1, are sampled independently from a distribution with mean u and variance o?. Consider the following four estimators for X1+ Xn 2 X1 2 п(п + 1) i=1 a. Calculate the bias of each of these estimators. b. Calculate the standard error for each estimator. c. Which estimator would you choose to use? (Give a reason for your choice).
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