Education is an important issue. Using the General Social Survey, find the mean and standard deviation for the highest year of school completed (EDUC).
a. Using this mean and standard deviation, what percentage of Americans are expected to complete 16 or more years of education (16 or above)?
b. What percentage of Americans are expected to report 10 or fewer years as their highest year of school completed?
c. What is the probability of selecting at random a person in America who completes more than 12 years of school (13 or more)?