The 2008 General Social Survey asked What do you think is th

The 2008 General Social Survey asked, \"What do you think is the ideal number of children for a family to have?\" The 678 females who responded had a median of 2, mean of 3.22, and standard deviation of 1.99. Find the standard error of the sample mean.

Solution

Note that the standard error of the sample mean is given by

SE = s/sqrt(n)

As s = 1.99, n = 678,

SE = 1.99/sqrt(678) = 0.07642549 [ANSWER]