Suppose we have a large population with mean μ = 80 and standard deviation σ = 7.2.

Let’s say we randomly sample 100 values from this population and compute the mean, then repeat this sampling process 10,000 times and record all the means we get.

Which of the following is the best approximation for the mean of our 10,000 sample means?

a. 8

b. 80

c. 100