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 12 boys is 25 with a standard deviation of 3. The mean score of the 16 girls is 24 with a standard deviation of 4. What is the standard error for the sampling distribution of $\overline{x}_{boys}$ - $\overline{x}_{girls}$ ?

A) 1
B) 1.87
C) 1.75
D) 1.32