Since this is the first assignment and the mean and median are extremely low, I will allow you a second chance to improve your scores.  Redo just the problems on which you lost points on a separate sheet of paper and staple this on top of your original assignment.  I will regrade those problems and add 1/2 of the points you earn back to your original score.  This is a very generous offer and will not be repeated on later Review Exercises.

Due Date: Friday, September 20

Concentrate on presentation and providing complete answers when redoing this assignment.  Some suggestions for how to improve follow.

• One word or one number answers are in general not acceptable. A complete answer includes an explanation or demonstration of the work you did to solve the problem and a complete sentence with the meaning of the answer.  See Section Exercise solutions and examples in the text for models to follow.

Write enough steps and/or explanations in words so that one of your colleagues in this class could read your paper and easily understand and follow what you did.  Use your judgment and take into account the comments I make on your paper as guidelines.
For example, on #3a, listing a single color is not sufficient.  You should state that drawing this color is the most likely outcome and say how you could see this from the information given (I can think of two slightly different calculations that could support a conclusion here).  As another example, for problems that involve computing the probability of an event, it is sufficient to write "P(event)=...show calculations...= final value" without further comment.
 
• Use notation correctly.  In particular, be careful to use the equal sign only when you really mean two quantities are equal.  For example, a color cannot equal a number, but the probability of drawing the color does equal a number.  Another common case is a mathematical run-on sentence which can occur in many contexts.  A simple example is 2*5=10+3=13, which states that 10=13!  Instead write 2*5+3=10+3=13 or 2*5=10 and then, on a separate line, 10+3=13.

 
• Use variables to represent unknown quantities and state in words what those variables represent.

 
• Simplify fractions early on when possible to make later arithmetic easier.

 
• Do not round values until the end whenever possible and always round correctly by the rules in Section 8.4 that we went over in class.

 
• Leave enough room so your work is easy to read and I have space to comment.

 
• Diligently work the Section Exercises before the class in which we discuss them.  Bring questions to class and to office hours to make sure you understand how to do them yourself.  This will make it easier to do the Review Exercises correctly.

 
• Start early so you have time to think about the Review Exercises carefully, get help if necessary, and present them clearly.  Rewrite a "rough draft" into final form.