Fill in the blanks. A particular random sample of n observations can be used to calculate a sample mean. We can determine the characteristics of the distribution of means derived by other samples of the size n taken from the same populations without taking additional samples. This distribution is called the sampling distribution of the

(a) ____________________. It is centered on (b)

____________________ and has standard deviation equal to (c)

____________________. The theorem that postulates that the distribution will tend to be Normal is called the (d)

____________________.