ECON 251 Exam #1 Answers
Spring 2012
PINK
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
BLUE
d
c
c
d
a
a
b
b
c
c
a
d
a
c
c
a
b
c
b
d
a
b
d
a
c
c
c
a
a
SMAM345
Quiz7
Name_
e x
p( x , ) =
, x = 0,1, 2,
x!
AnarticleintheLosAngelestimesreportsthat1in200peoplecarrythedefective
genethatcausesinheritedcoloncancer.Considerasampleof1000individuals.
A. Whatistheexpectednumberofpeoplethatcarrythedefectivegene?
(
EXERCISES 4.1
1
1. Four bits are transmitted over a digital communication channel. Each bit is
either distorted or received without distortion. List the sample space S and the
event of interest E so that at most one bit will be distorted.
Let d denote a d
STAT 350 Assignment 6
Due date: Monday, Feb 27, 5pm (to my mailbox in HAAS 164) Read Sections 7.3, 7.4, and 7.5. Do the following exercises from the book:
Section 7.3: 22, 25, 28, 30 Section 7.4: 36, 38, 40 part (a) only Section 7.5: 49, 52 part (a) onl
Point Estimation, Large-Sample C.I.s for a Population Mean
Chapter 7: Estimation and Statistical Intervals
Lecture 11
7.1 Point Estimation
In Statistics, in many cases we are interested in a certain population and its parameter(s) To get big picture abou
STAT 350 Assignment 5
Due date: 5pm on Wed, Feb 22 Read Sections 7.1 and 7.2. Do the following exercises from the book:
Section 7.1: 2, 6 Section 7.2: 8, 9, 12, 14, 15
Lecture 10: Depicting Sampling Distributions of a Sample Proportion
Chapter 5: Probability and Sampling Distributions
2/10/12 Lecture 10 1
Sample Proportion
"1" is assigned to population members having a specified characteristic and "0" is assigned to th
Homework Assignment: MA 182
Spring 2012
Textbook: Thomas Calculus: Early Transcendentals , 12th edition, Addison Wesley
Note: Many exercises have answers in the back of the book. An answer without supporting work is
worth no credit unless, of course, no w
Math 301 , Fall 2010
Prof. Giulio Caviglia
Midterm 1
closed book, closed notes
Remember to write your name. Attempt to answer all questions
definition
(1) Let (an ) be a sequence converging to L, and let (bn ) be a sequence converging to L as well (same l
Note Title 2/7/2012
Formulas for Curves in Space
Unit tangent vector: T = Ii
P ' ' I ' I N dT/dt
r1r1c1pa unlt norma vector. I dT/drl
Binormal vector: B = T X N
v X a
Curvature: K = = I I
(is v 3
i 5
3,? z
Torsion: 7 = 7 dB - N = 2
1
Homework Assignment: MA 182
Spring 2012
Textbook: Thomas Calculus: Early Transcendentals , 12th edition, Addison Wesley
Note: Many exercises have answers in the back of the book. An answer without supporting work is
worth no credit unless, of course, no w
Proof of Bayes Theorem
The probability of two events A and B happening, P(AB), is the probability
of A, P(A), times the probability of B given that A has occurred, P(B|A).
P (A B ) = P (A)P (B |A)
(1)
On the other hand, the probability of A and B is also
Tutorial for Opening SAS This is the tutorial notes for STAT 350, Spring 2010. The materials are prepared by Xuanyao He. Start SAS system and get familiar with the menu (on an itap machine) SAS system is preloaded at all ItaP machine. Use the following st
Homework Assignment: MA 182
Spring 2012
Textbook: Thomas Calculus: Early Transcendentals , 12th edition, Addison Wesley
Note: Many exercises have answers in the back of the book. An answer without supporting work is
worth no credit unless, of course, no w
Homework Assignment: MA 182
Spring 2012
Textbook: Thomas Calculus: Early Transcendentals , 12th edition, Addison Wesley
Note: Many exercises have answers in the back of the book. An answer without supporting work is
worth no credit unless, of course, no w
Math 301 , Spring 2012
Prof. Giulio Caviglia
HW on Cauchy sequences
Denition 1. Let (an )nN be a sequence. We say that (an )nN is Cauchy if for
every > 0 there exists a number N such that
|an am | <
for all positive integers n > N and m > N.
Exercises
(1)
Math 301 , Spring 2012
Prof. Giulio Caviglia
HW on Cauchy sequences
Denition 1. Let (an )nN be a sequence. We say that (an )nN is Cauchy if for
every > 0 there exists a number N such that
|an am | <
for all positive integers n > N and m > N.
Exercises
(1)
HIST
21:32
Early Modern East Asia Overview(1600-1800)
The concept of ASIA
Historically Asia is a European construct of idea
Etymology: Asia
-from Greek; to go out, to rise, in the reference to the sun, thus
the land of the sunshine
The concept of East Asi
HIST(2)
21:47
The state of Europe: 16th-18th
From political fragmentation to consolidation
500 states in 1500
30 states in 1700
Intense rivalry and completion among states
state building
warfare
Rise of mercantilism
Need for money
Money meant power
Compet
HIST(3)
21:32
Encounters: the Qing and the British Empire
The Qing Empire
Qing dynasty
Multinational, multiethnic, and multi-linguistic
inner Asia and Tibet
Empire builders
Reign of Emperor Kangxi
Reign of Emperor Qianglong
Qing Foreign Relations
The trib
HIST(4)
21:30
From Tokugawa to Meiji
Commodore Perrys Arrival
Four American ships arrived at Edo(Tokyo) Bay in July 1853
Led by commodore Matthew Perry
Japanese reaction: giant dragons puffing smoke.
American request for trade
Japan was forced to open its
HIST
The Taiping Rebellion leader: Hong xiu quan
Son of a farmer
failed attempts to become a literates
under influence of Christianity
regarded himself as younger son of the god
The Rise of the Taiping Rebellion
Society of god worshippers
Built military s
HIST
21:30
China: self-strengthening movement and new imperialism
Ca.1861-1895
Three Phases
Tongzhi Restoration (1862-1872)
Second phase (1872-1885)
Third phase (1885-1895)
Self-strengtheners
Reform minded officials
Tongzhi Restoration
Zeng Guofan and Li
MAP QUIZ
HIST 241
NAME: _
SCORE = #CORRECT*10038 =_
INSTRUCTIONS: In both parts of this quiz, insert the appropriate letter in the space to
the right of each place name.
PART I CHINA
Chongqing
Gobi Desert
Hainan Island
Kunlun Mountains
Himalayan Mountains
Econ 251(1)
Economics = social science that studies the choices we make as
we cope scarcity and the incentives that influence and reconcile
our choices
ceteris paribus
Scarcity = available resources are insufficient to satisfy wants
Resources =
- Natural
Econ(5)
18:31
Changes in equilibrium
Changes in D
Changes in S
Changes in D and S
ex) market for cars
in household incomes
assume cars are normal goods -> Dshifts right
1
upward price of steel used to make cars -> downward S(shift left)
(2)
D + S both sh
Econ(6)
18:31
Ed + revenue
Ed = |% delta Qd/0elta P|
Revenue = P * Qd
up price -> Revenue
Ed > 1 |0eltaQd| > |0eltaP|
If demand is elastic, revenue follows Qd
Ed < 1 |0eltaQd| < |0eltaP|
if demand is inelastic, revenues follows price
Ed = 1
|0eltaQd| = |0
Econ
18:34
Efficiency + Equity
Efficiency
Production efficiency = produce at lowest possible cost
1
There is no other use of our resources that would have higher value
economic cost = opportunity cost = value of best alternative
if value of using resource