(27) Consider estimating the mean of a variable drawn from a population with mean and standard...

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(27) Consider estimating the mean of a variable drawn from a population with mean μ and standard deviation σ, using the following formulae:

ˆμ

1 = x1

ˆμ

2 = x1 + x2 2

ˆμ

3 = x1 + 2x2 2

ˆμ

4 = x1 + x2 3

ˆμ

5 = n i=1 xi n

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