A study was done to determine whether there is a difference in the amount of time (in hours) that graduate students versus undergraduate students spend on the Internet per day.The results of the analysis are shown below. 
Is there a significant difference in the amount of time that graduate and undergraduate students spend on the Internet?
Definitions:
Commercial Applicability
The suitability or potential of a product or invention to be used, marketed, or sold in a commercial context.
Expected-Rate-of-Return Curve
A graphical representation showing the expected return on investment for varying levels of risk or different scenarios.
Interest-Rate Cost-of-Funds Curve
A graphical representation showing the relationship between the cost of funds for financial institutions and the interest rates over different periods.
Optimal R&D Expenditures
The level of spending on research and development that maximizes a firm's profit or efficiency while being sustainable in the long term.
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