The continually increasing cost of attending college has motivated many economists to analyze the return on investment of a college education. Many people are asking if going to college is really worth it based on a rigorous analysis of the long-term financial benefits.

This Excel fileCollege Return on Investmenthttps://www.webassign.net/userimages/college%20education%20return%20on%20investment%20private%20for%20profit%20webassign.xlsx?db=v4net&id=533310 shows the 30 year net return on investment for 178 US private for profit colleges and universities in the column "30-year NPV", (30-year Net Present Value; data from the Georgetown UniversityCenter on Education and the Workforce). The 30 year net return on investment is determined by calculating the earnings differential less the cost of a college education for a recent graduate. The earnings differential is the difference between the 30 year median pay for a recent bachelor's graduate and the 34-36 year median pay for a high school graduate with no post-secondary education (34-36 years are used to account for the opportunity cost of going to college).

Question 1. Calculate the z-score for the University of Phoenix-North Carolina's 30 year net return on investment. Round your answer to 3 decimal places.

Question 2. Calculate the z-score for the University of Phoenix-California's 30 year net return on investment. Round your answer to 3 decimal places.

Question 3. Neumont College of Computer Science in Utah has a z-score of 3.32 for its 30 year net return on investment. Select the choice below that gives the correct interpretation of Neumont College of Computer Science's z-score (2 submissions allowed).

Neumont College of Computer Science's 30 year net return on investment is $332,000 above the mean 30 year net return on investment.

Neumont College of Computer Science's 30 year net return on investment is 3.32 standard deviations above the mean 30 year net return on investment.

It takes 3.32 fewer years for a Neumont College of Computer Science graduate to earn the same amount of money as a graduate of any other school.

Neumont College of Computer Science's 30 year net return on investment is 3.32 units above the mean 30 year net return on investment.

Neumont College of Computer Science's 30 year net return on investment is 3.32 times as large as the mean 30 year net return on investment.