Probability for Engineering Applications
Mid Term Exam #1, October 20
th
, 2003
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Exam Rules:
1.
This is a 50 minutes exam.
2.
The syllabus includes all material covered until Section 3.6 (inclusive).
3.
This is NOT an Open Book and Notes Exam. You are allowed one A4 sized crib
sheet with only one side used.
4.
You are not allowed to consult any other student.
5.
You may use a calculator, but not a laptop, palmtop or such other computer.
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The last page is blank for your use.
Q1
Q2
Q3
Q4
Total
20
30
20
30
100
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View Full Document1.
For the dataset given below,
32
23
12
28
05
11
19
08
03
17
find
a.
sample mean (5pts)
8
.
2
1
1
=
=
∑
=
N
n
n
x
N
m
b.
sample median (5 pts)
There are 10 numbers in the dataset. If the dataset is sorted, then the fifth number
is 05 and the sixth number is 08. Therefore, the median is
5
.
6
)
08
05
(
2
1
=
+
c.
sample standard deviation (5pts)
( 29
066
.
19
1
1
1
2
=


=
∑
=
N
n
n
x
N
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 Spring '03
 WOODS
 Standard Deviation, Probability theory, Cumulative distribution function

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