Here Is a Question Based on the Footnotes in the Chapter

Multiple Choice

Here is a question based on the footnotes in the chapter. Pick the true statement from the four below.

A) For most z-score problems, interpolation is necessary in order to get a correct answer.
B) Recent studies of IQs show that in many countries the mean IQ is well under 100.
C) To statisticians, error means random variation.
D) All of the other alternatives are correct.