Recall that quantitative reasoning GRE scores are approximately bell- shaped with a mean of 151.3 and standard deviation of 8.7. The minimum and maximum possible scores on this part of the GRE exam are 130 and 170, respectively.
a. What is the range for these GRE scores?
b. Refer to the result about the relationship between the range and standard deviation in Exercise 25. Does the result make sense for GRE scores? Explain.