SCENARIO 4-2 An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm.The following result was obtained. 
-Referring to Scenario 4-2, what is the probability that a randomly selected student who went bar hopping did well on the midterm?
Definitions:
Contribution Margin
The difference between sales revenue and the variable costs associated with the production or sale of products or services. It's used to determine the ability of a business to cover its fixed costs.
Margin of Safety
This financial ratio measures the difference between actual or expected sales and the break-even point, indicating the cushion a company has before it incurs a loss.
Relevant Range
The range of activity within which the assumptions about fixed and variable cost behavior are valid.
High-low Method
A way to estimate the cost-behavior formula that uses the highest and lowest levels of activity to determine fixed and variable costs.
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