If a random sample of size n = 20 is taken from a normal distribution with a mean μ, which of the following would be an unbiased estimator for μ?

If a random sample of size n = 20 is taken from a normal distribution with a mean μ, which of the following would be an unbiased estimator for μ?


a.p̂

b. ?

c. x̄

d. s


Answer: c. x̄


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