In Order to Determine Whether or Not a Driver's Education

question 49

Essay

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.

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Definitions:

Accounts Receivable

The money owed to a business by its customers for goods or services that have been delivered but not yet paid for.

Step-Variable Cost

Costs that are fixed over a small range of activity but can change with significant changes in the volume of activity.

Sunk Cost

Expenses already incurred and which cannot be recovered, and should not be considered when making future business decisions.

Direct Manufacturing Cost

The sum of all costs directly tied to the production process, including direct labor and raw materials.