The estimated standard error of the mean takes on a negative value only
when
a. most of the samples are below the mean
b. populations of less than an N of 30 are involved
c. populations of more than an N of 30 are involved
d. none of these
Question 2
In the 2obt calculation, the denominator is _____.
a. fo
b. fe
c. N
d. fo - fe