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 7.125

image 125. Refer to Exercise 123. What if the population standard deviation was greater than 116? Explain how this would affect the following, if at all:

  1. Probability that a randomly selected SAT Math score will be less than 500
  4. Sampling distribution of the sample mean

7.1.125

(a) Increase (b) Remain the same (c) Increase (d) Still normal with but would increase