I am sure there is nothing sinister about this, but last year's Sample Exams the department posted had 40 questions instead of the 33 your samples have.  I am sure that is merely because they realized the exam was too long, so they trimmed some of the questions.  However, you may want to look at these samples just to see a few extra questions that may appear on your exam:

Stat 1000 Sample Term Test 1 A and B from Feb. 2014

Here are the questions you especially may want to look at, since they do not appear on your sample exams:

Test 1-A: Questions 15, 16, 21, 27, 29, and 39

Test 1-B: Questions 1, 4, 7, 18, 19, 32, 35, and 37

Did you see my solutions to the Sample Exams you were given?  Click here.