Exhibit 10-3
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information. 
-Refer to Exhibit 10-3. The test statistic for the difference between the two population means is
Definitions:
Closing Inventory
The quantity and value of stock on hand at the end of an accounting period.
Direct Material
Raw materials that can be directly attributed to the production of goods.
Finished Products
Goods that have completed the manufacturing process and are ready for sale.
Beginning Inventory
The value of goods available for sale at the start of an accounting period.
Q10: Refer to Exhibit 12-2. At 95% confidence,
Q22: A sample of 16 students showed that
Q43: Refer to Exhibit 14-5. The coefficient of
Q46: It has been suggested that night shift-workers
Q54: Refer to Exhibit 14-2. The least squares
Q63: Refer to Exhibit 10-3. The point estimate
Q89: A local university administers a comprehensive examination
Q99: Refer to Exhibit 14-10. The MSE is<br>A)17<br>B)8<br>C)34<br>D)42
Q120: Refer to Exhibit 7-3. The probability that
Q123: Shown below is a portion of