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When you estimate the population mean, the sample mean is the best estimator because: a. the sample mean is unbiased. b. the sample mean is

When you estimate the population mean, the sample mean is the best estimator because:

a.

the sample mean is unbiased.

b.

the sample mean is unbiased and has the minimum standard error.

c.

the sample mean is always correct.

d.

the sample mean never overestimates the population mean.

e.

the sample mean has the minimum standard error.

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