A Fourth Grade Class of 28 Students Is Given a Standardized

Multiple Choice

A fourth grade class of 28 students is given a standardized math test. The mean score of the boys is compared to the mean score of the girls. Which statistic is being studied?

A) $\overline{x}$
B) $\overline{d}$
C) $\overline{x}_{1}$ - $\overline{x}_{2}$
D) $\mu$ ₁ - $\mu$ ₂