When we estimate a population mean by using the sample mean, why does increasing the sample size, n, result in a smaller sampling error?
a. The above statement is incorrect; the sample size has no effect on the sampling error.
b. The larger the sample size, the more closely the possible values of x̄ cluster around the mean of x̄.
c. If the sample size is larger, the possible values of x̄ are farther from the mean of x.
d. None of the above.