In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 students were given the exam before and after taking the course. The results are shown below.
Let d Score After - Score Before.
a.Compute the test statistic.
b.At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.
Definitions:
Variable Costs
Costs that change in proportion with the level of activity or production volume of a company.
Contribution Rate
The contribution margin expressed as a percentage of the unit selling price.
Fixed Costs
Expenses that do not change with the volume of production or sales, such as rent or salaries.
Net Income
The amount of money left after subtracting all expenses, taxes, and costs from total revenue.
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