A population has a known mean μ and known standard deviation σ. Random samples of size n are repeatedly drawn.
The mean of the sampling distribution of x̄ is always equal to which of the following?
- A
x̄ from any one sample.
- B
- Ccheck_circle
μ (the population mean).
- D
μ/n.
Explanation
The sample mean is unbiased, so μ_x̄ = μ.