Answer:
Correct option is (a) equal to the population mean.
Step-by-step explanation:
According to the Central limit theorem if a large sample is selected from an unknown population with mean μ and standard deviation σ then the sampling distribution of sample means follows a normal distribution.
The mean and standard deviation of this sampling distribution is:
[tex]\mu_{\bar x}=\mu[/tex]
[tex]\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}[/tex]
This standard deviation of the sampling distribution of mean is known as the standard error.
Thus, the correct option is (a) equal to the population mean.
