reading and writing on the sat exam in table p.16 with exercise p.157, we see that scores on the reading and writing portion of the sat (scholastic aptitude test) exam are normally distributed with mean 531 and standard deviation 104. use the normal distribution to answer the following questions: what is the estimated percentile for a student who scores 700 on critical reading? what is the approximate score for a student who is at the 30th percentile for critical reading?