Practice for Material Since Exam Three
Part I: For each of the following, simply give the answer. It is not required that any derivation
or justication be provided, and there is no partial credit. Each of these is worth one point.
1. In lecture we describ
36-220/247/747 Exam One
VERSION A
Name
Email
Part Possible Points
I
27
II - 1
11
II - 2
11
II - 3
8
Score
57
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36-220/247/747 Exam One
Name
Email
Instructions:
1. You have 50 minutes to work on the exam. Please understand that in order to b
Homework 1 36-220/247/747 Statistics for Engineers and Scientists Schafer/Finegold
Due Wednesday January 25, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
1. Exercise 1.3.
2. Exercise
Solution to HW #1 36-220/247/747
1. (a) The population of interest in this case is the thion level in air as a result of contamination
due to extensive application of pesticides to crops, at any location and at any date. (Alternatively, the population cou
Homework 2 36-220/247/747 Statistics for Engineers and Scientists Finegold and
Schafer
Due Feburary 1, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
1. Exercise 3.33. (Note that when t
Solution to HW #2 36-220/247/747
1. (a) Dene the following events:
A = cfw_ Alarm A goes o , B = cfw_ Alarm B goes o , I = cfw_ There is an intruder .
P (A|I ) = 0.9
P (B |I ) = 0.95
P (A|I C ) = 0.2
P (B |I C ) = 0.1
(b) Both systems sounding corresponds
Homework 3 36-220/247/747 Statistics for Engineers and Scientists Schafer and
Finegold
Due February 8, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
1. Exercise 4.33.
2. Exercise 4.84.
36-220/247/747 Practice Exam One
Name
Email
Instructions:
1. You have 50 minutes to work on the exam. Please understand that in order to be fair,
we will stop at 12:20, regardless of when you started.
2. Illegible work will not receive any credit.
3. For
36-220/247/747 Practice Exam One
Name
Email
Instructions:
1. You have 50 minutes to work on the exam. Please understand that in order to be fair,
we will stop at 12:20, regardless of when you started.
2. Illegible work will not receive any credit.
3. For
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LECTURE 6: GENERAL RANDOM VARIABLES
The notion of a variable was introduced in Lecture 2. Now we
consider-irandom variables, which can be thought of as a variable
Whose value is determined by the result of a proba
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LECTURE 5: CONDITIONAL PROBABILITY
It is often the case that we want to find the probability of an event
while incorporating known information that another event has
occurred. This is called conditional probability.
r
Topic Section Exercise #1 36-220 Statistics for Engineers
Consider a general situation in which parts come off of a production line and are then
grouped into lots of size N parts.
E XERCISE : Let Ai = cfw_ith part produced is defective. Is it reasonable
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LECTURE 2: DESCRIPTIVE STATISTICS, MINITAB
DEF. 7. variable [3] s a measurable characteristic of members of
a population.
f.
DEF. 8. A data set ' a collection of measurements of one or more
variables
Topic Section Exercise #2 36-220 Statistics for Engineers
In this exercise we will describe some of the basics of statistical process control (SPC). The
fundamental concept is that one wishes to monitor the performance of a process over
time in such a way
Solution to HW #3 36-220/247/747
1. Let Y = the number of intruders detected (during snowy conditions).
Assuming that whether each intruder is detected is independent, Y has the binomial distribution with n = 10, and p is unknown.
(a) Assuming that p = 0.
Homework 4 36-220/247/747 Statistics for Engineers and Scientists
Due February 22, 2012, during lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
1. Exercise 5.24
2. Exercise 5.30
3. Exercise 6.66
4. Exercise 6.70
Homework 7 36-220/247/747 Statistics for Engineers and Scientists
Due April 4, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
When you use Minitab for an exercise, you are required to s
Solution to HW #7 36-220/247/747
1. (8.24) Assuming normality (so t-test applies):
(a): Let = mean breaking strength.
H0 : = 2500
HA : > 2500
Minitab output:
One-Sample T: C1
Test of mu = 2500 vs > 2500
Variable
C1
N
7
Mean
2571.4
StDev
115.1
SE Mean
43.5
36-220/247/747 Practice for Exam Three April 2012
Please note that this was created by merging material from past exams from 36-220 and 36-224.
The length of this practice is not indicative of the length of a 50-minute exam.
Instructions:
1. Illegible wor
36-220/247/747 Practice for Exam Three April 2012
Please note that this was created by merging material from past exams from 36-220 and 36-224.
The length of this practice is not indicative of the length of a 50-minute exam.
Instructions:
1. Illegible wor
Homework 8 36-220/247/747 Statistics for Engineers and Scientists
Due April 25, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
When you use Minitab for an exercise, you are required to
36-220/247/747 Exam Three April 11, 2012
VERSION A
Name
Email
Part Possible Points
I
16
II - 1
8
II - 2
6
II - 3
4
II - 4
3
Score
37
Page left blank.
36-220/247/747 Exam Three April 11, 2012
VERSION A
Name
Email
Instructions:
1. You have 50 minutes to wor
Homework 9 36-220/247/747 Statistics for Engineers and Scientists
Due May 2, 2012, at the beginning of lecture.
Unless otherwise noted, exercises are from Mendenhall and Sincich, Fifth Edition.
When you use Minitab for an exercise, you are required to sho