SAT Math Scores. Use this information for Exercises 121–126. The College Board (www.collegeboard.com) reports that the nationwide mean math SAT score for 2013 is 514. Assume that the standard deviation is 116 and that the scores are normally distributed.

Question 7.122

122. As a researcher, you are looking at samples of SAT Math scores of size 16.

  1. Find .
  2. Find .
  3. What can you say about the sampling distribution of the sample mean? How do you know this?