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 standard error of 
is
Definitions:
Peritoneal
Relating to or affecting the peritoneum, the serous membrane lining the cavity of the abdomen and covering the abdominal organs.
Abdominal
Relating to the abdomen, the part of the body between the chest and the pelvis.
Renal
Relates to the kidneys and their functions in the body.
Renal Medulla
The innermost part of the kidney that contains structures crucial for the concentration of urine.
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