MAT 167: Statistics, Midterm Exam
SOLUTIONS p. 1 of 12
Solution: Results:
> summary ( s c o r e )
Min . 1 s t Qu . Median
Mean 3 rd Qu .
Max .
42.42
51.14
66.67
66.13
80.49 100.00
> par ( mfrow = c ( 1 , 2 ) )
> b o x p l o t ( s c o r e , main = Boxplot
MAT 167: Statistics, Test I: Chapters 1-4
SOLUTIONS p. 1 of 9
Solution:
Spring 2008 results. Since question 1(e) may have been ambiguous and under emphasized
in class I dropped it. However, make sure you know the answer in the future. The exam score
was o
Exam 2 Solutions Math 215 Fall 2005
High: 100 Average: 76 Low: 45
If I were to curve this exam: 85 100 A; 70 85 B; 0 70 C or below.
1. Do Gaussian elimination to make the transformation [ A | I ] [ I | A 1 ] :
1
0
1
0
0
1
0
1
0
0
1
0
0
0
0
1
1
0
0
0
0
1
0
Math 141 Spring 2015 Exam 3 Solutions
Low: 39 Median: 80 High: 100
Approximate breakdown if I based your grade entirely on this exam:
85 100
A
75 85
B
0 75
C or below
(10,4)
(10,4) = 10 9 8 7 OR (10,4) 4!
10
10!
10987
=
=
(the 6 is for 6 stocks not being
MAT 167: Statistics, Test I: Chapters 1-4
SOLUTIONS p. 1 of 9
Solution:
Exam Results. Below are the summary statistics.
> summary ( s c o r e )
Min . 1 s t Qu . Median
Mean 3 rd Qu .
Max .
30.00
67.50
81.25
75.11
85.62
92.50
> par ( mfrow = c ( 1 , 2 ) )
Math 141 Spring 2015 Exam 2 Solutions
Low: 32 Median: 87 High: 103
Approximate breakdown if I based your grade entirely on this exam:
90 100
A
80 90
B
0 80
C or below
1. For each additional cigarette smoked (per person per year), there will be an addition
Exam 3 Solutions Math 215 Fall 2005
1.
R ( S 'T ) or R ( S T ' )' or R ( R S T ' )' or R ( R 'S 'T ) or
( R S 'T ' ) ( R T ) or there are probably other ways of writing this I have not listed.
Where n(J) = number of people who surf and n(S) = number of pe
1. Heart problems can be examined via a small tube (called a catheter) threaded into the heart from a
vein in the patients leg. It is important that the company that manufactures the catheter maintains
a diameter of 2 mm. Suppose denotes the population me
STAT205
Exam2Name_ANSWERKEY_
Fall2006
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nj
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Y1 Y2
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Part I: Answer eight of the following nine questions. If you complete more than eight, I
will grade only the first eight. Fiv