Solve the below problem:
Q: Each of the following situations produces data that can be summarized with mean and standard deviation. Which wouldrequire population formulas for variance and standard deviation rather than sample formulas?
A The Environmental Protection Agency measures carbon monoxide content of air at 15 locations of a metropolitan area.
B An algebra teacher has scores from his students' fi nal exams.
C A consumer magazine tests four cars from each of three brands of hybrid vehicles to evaluate operating cost per mile
D Number of home runs per game for the Boston Red Sox in the 2008 season.