STA 100: Midterm II
Wednesday, February 16th, 8.008.50am
For all questions you must show your work.
This enables us to understand your
thought process, give partial credit and prevent cheating.
You should answer all of the problems in this exam.
I This exam has 9 pages, including one page of instructions (this page), 6 pages of questions
and 2 pages of probability tables. The exam has 3 problems.
II Write your answer in the blank space provided below each subproblem. The space provided
should be more than enough (e.g., if you find yourself needing a lot more space than provided
you should be concerned with the approach you’re using). If you do need more space, then
please use the back of the corresponding page and clearly indicate that you have done so.
III The subproblems are arranged in a logical order and thus you should try to complete them
in the order given. However, you should not ‘get stuck’ on a subproblem if you are unable to
complete it. You should move on and try to complete the rest by assuming any given results
in the preceding parts are true even if you cannot establish or prove them.
IV When asked to provide a numerical answer, indicate how you arrive at the answer.
This
makes it possible for us to render you partial credit even if you made an arithmetic error.
V Use of a calculator is fine but no connection to the internet can be used. You are allowed to
bring
one page (doublesided) of notes
into the exam. All other materials are prohibited.
VI Please ask if you are unsure of the meaning of a particular problem. This exam is to be done
alone, with no help from any other individuals. Thank you for your cooperation!
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 Fall '10
 DRAKE
 Normal Distribution, new cases

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