A Large School District Is Considering Implementing a Program That

Multiple Choice

A large school district is considering implementing a program that, if successful, would improve the reading scores of its students by 10 points. The current reading scores for the district are normally distributed with a mean of 37 and a standard deviation of 12. The administrators decide to test the new program in one school of 340 students.
-What is the standard deviation of the comparison distribution?

A) .42
B) .65
C) 12
D) 144