A Researcher Is Conducting a Matched?pairs Study

Multiple Choice

A researcher is conducting a matched?pairs study. She gathers data on each pair in the study resulting in: Assume that the data are normally distributed in the population. The sample standard deviation (s_d) of the differences is ___.

A) 1.3
B) 1.14
C) 1.04
D) 1.02
E) 1.47