A student asked a statistics professor if grades were marked "on the curve." The professor decided to give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 and to use the following results. 
What is your decision if = 0.05?
Definitions:
Marginal Analysis
An examination of the benefits and costs of certain activities or financial decisions.
Marginal Analysis
A technique used in economics to examine the benefits of adding one more unit of a good or service.
Marginal Cost
The cost incurred by producing one additional unit of a product or service.
Marginal Benefit
The additional satisfaction or utility gained by consuming an additional unit of a good or service.
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