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PubH 6450
NAME:_____________________________________________
Exam 1
(10/07/10)
Lecture Instructor (please circle):
Susan Telke
Andy Mugglin
Directions:
This is an openbook, opennotes exam; however, sharing of books, notes, handouts, homework or lab
papers, calculators, or verbal comments is not permitted.
You may use a calculator of your choosing, but
laptop computers and any kind of internet connection are not permitted.
For multiple choice questions, please clearly indicate your answer(s).
For short answer problems, please show all relevant work necessary to arrive at a solution, as partial
credit will be awarded.
Correct answers without appropriate justification will generally not receive full
credit.
DO NOT LOOK AT OR BEGIN THE EXAM UNTIL
THE INSTRUCTOR ANNOUNCES THAT THE EXAM
IS STARTING.
You will have from 1:25pm to 3:20pm to complete this exam, so do not spend too much time on any
one problem.
With such a big class, there is always someone who needs to take the exam early or late. After the
exam is over,
DO NOT DISCUSS THIS EXAM
with anyone who was not in this same room taking it
with you. We anticipate returning the exams in class on Tuesday.
Advice on rounding:
We suggest that you round calculations (mean, s.d., etc.) to 2 decimal places
(if the data are whole numbers), 3 decimal places (if the data are known to the nearest 0.1), etc.
Probabilities are usually rounded to 3 or 4 decimal places, but no more.
Good luck!!
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Problem 1 (16 points):
Suppose we have a group of dialysis patients with the following characteristics:
62% have diabetes (type I or type II)
23% have heart disease
A)
If we randomly choose a patient and we denote the event A as the event that the patient has heart
disease and B as the event that the patient has diabetes, which of these is an expression denoting
dialysis patients with heart disease but without diabetes (circle all that apply)?
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 Fall '10
 AndyMugglin

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