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 the critical value of chi-square at the .05 level?
Definitions:
MU/P Ratio
The ratio of marginal utility (MU) to price (P), used to determine the optimal consumption point where consumer satisfaction per unit of cost is maximized.
Marginal Utility
The heightened benefit received from using one more unit of a good or service.
Marginal Utility Per Dollar
The additional satisfaction obtained from spending one more dollar on a good or service.
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