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Statistics 351 Midterm #1 – October 6, 2008
This exam has 4 problems and 6 numbered pages
.
You have 50 minutes to complete this exam. Please read all instructions carefully, and check
your answers. Show all work neatly and in order, and clearly indicate your ﬁnal answers.
Answers must be justiﬁed whenever possible in order to earn full credit.
Unless otherwise
speciﬁed, no credit will be given for unsupported answers, even if your ﬁnal
answer is correct.
Points will be deducted for incoherent, incorrect, and/or irrelevant
statements.
This exam is closedbook, except that one
8
1
2
×
11
doublesided page of handwritten notes is
permitted. No other aids are allowed.
You must answer all of the questions in the space provided. Note that blank space is NOT
an indication of a question’s diﬃculty.
Name:
Instructor: Michael Kozdron
Problem
Score
1
2
3
4
TOTAL:
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View Full Document1.
(
24 points
)
Suppose that the random vector (
X, Y
)
0
has joint density function
f
X,Y
(
x, y
) =
±
e

y
,
if 0
< x < y <
∞
,
0
,
otherwise
.
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 Fall '08
 MichaelKozdron
 Statistics, Probability

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