STAT 230. Test 2 -Spring 2015
Name:
Lecturer:
Decide whether the following statements are true (T) or false (F).
Each correct answer will be awarded 2 points. No penalty for wrong
answers.
T
F
Corr(X, 4 3 X) = 1 for any random variable with positive varia
BUSS 230 Managerial Economics
Fall 2013 2014
Dr. George G. Namur
Midterm Review Problems
Problem 1
A firms total cost and total revenue functions are as follows:
a) Write an expression for the profit function (as a function of Q)
b) Determine the optimal
AMERICAN UNIVERSITY of BEIRUT
OLAYAN SCHOOL of BUSINESS
BUSS 230 Managerial Economics- Fall Semester 2006/07
FINAL EXAM January 18, 2007
NAME: _
ID: _
SECTION: _
INSTRUCTOR: _
ANSWER ALL QUESTIONS TIME ALLOWED: 2 hours
I.
Multiple choice - (24 points). On
Sarah Kaakati
BUSS 230 Notes for the Midterm (Chapter 1
5, 7nth edition)
Chapter1
Managerial Economics refers to the application of economic theory and the tools of analysis of
decision science to examine how an organization can achieve its aims or objec
STAT230
AMERICAN UNIVERSITY OF BEIRUT
COMMON FINAL EXAMINATION A
FALL SEMESTER
NAME: KEY KEY KEY KEY KEY KEY
DECEMBER 18, 2013
SECTION:
Instructions. This test includes questions of multiple types: True/False, multiple choice, and open ended
questions. Ea
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Fall 2007-2008
quiz # 2
Name:
.
ID #:
.
Exercise 1 (25 points) Let X be a random a random variable with pdf
1/2 0 < x < 1
f (x) =
1/2 2 < x < 3
0
elsewhere
a. nd the
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Spring 2007
quiz # 2
Name:
.
ID #:
.
1. (10 points) A purchaser of electrical components buys them in lots of size 10. It is his
policy to inspect 3 components randoml
Stat 230 - Midterm (Summer 10)
T. Tlas
=
Please answer all the questions on the same sheet of paper on which they are written. Any
part of your answer written on the wrong page will not be graded.
There are 6 problems in total. Some questions have sever
www.amal-aub.org
American University of Beirut
. .
.
STAT 230
Introduction to Probability and
Summer 2006
,
and om' Variables
.
quiz # 2
Exercise 1 (6 points) Let X be a random a random variable with pdf
a. Find the cdf of X
b. Find P ( X
c. Find
< -1/2),
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Spring 25308
quiz # 2
Name: ID #:
circle your section please: 1 (TTH 8 am} 2 (TTH 2 pm)
1. In a lot of 10 light bulbs, there are 2 bad bulbs. An inspector examines 5 b
www.amal-aub.org
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Summer 2006
quiz # 3
Exercise 1 There are 5 black chips and 3 white chips in a bowl. The black chips are numbered 1,1,1,2,2,
respectively, and the whi
/.
AHERICAH UNWERSI'I'Y DF BEIRUT
MIDTERH EXAM; STAT zoo Summer .E
Home: Section:
$=
For corroctor on
Melted-m Exam. Grade
PART ONE : MULTIPLE EH BiBElhlo Penalty]. Circle your answer. Use E when the answer is not any of the
glven options. For each
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Spring 2003
quiz 7% 1
Name: ID #:
circle your section please: 1 (TTH 8 am) 2 (TTH 2 pm)
Exercise 1 (20 points)
a. 3 history books, 4 math books, and 2 biology books ar
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Fall 2011
quiz # 1
1) A palindrome is a sequence of letters that reads
the same backwards as forwards (for example
aabaa and radar are palindrome; abb is not).
How man
American University of Beirut
8) In a squash tournament between three playSTAT 230
ers A, B and C, each player plays the othIntroduction to Probability and Random Variables
ers once (ie. A plays B, A plays C and B
Spring 2011
plays C). Assume the followin
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Fall 2007-2008
quiz # 1
Name:
.
ID #:
.
Exercise 1 a. (4 points) A total of 7 dierent gifts are to be distributed among 10 children.
How many distinct results are poss
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Summer 2007
quiz # 1
Exercise 1 a. (7 points) A cafe lets you order a deli sandwich your way. There are 6 choices
for bread, 4 choices for meat, 4 choices for cheese,
Combinatorics
Notation
n!
=
Ck,n
=
Pk,n
=
n (n 1) (n 2) 3 2 1
Pk,n
n
n
n!
=
=
=
k!(n k)!
k!
k
nk
n!
n
(n)k =
= k!
= n (n 1) (n k + 1)
(n k)!
k
Drawing a sample of size k from an urn containing n balls
ai , label of the ball selected at i-th step: ai =
Chemistry 203
Pre-Lab Assignment: Determining the hardness of different
water sample
Name _
Section # _
ID #
Date
_
_
1. Answer the following short questions:
a. What is the ligand used in this experiment?
b. What is the indicator?
c. What is the buffer?
CHEM. 203 Lab Report
NAME : _
EXPERIMENT No. : _
TITLE : _
DATE : _
SECTION #: _
Preparation of a Standard MgSO4.7H2O Solution
m MgSO4.7H2O = _
V solution =_
M MgSO4.7H2O = _
Table 1: Standardization of the EDTA solution
Trial 1
Upper EDTA reading (mL)
T
Name: Fadi El Refai
ID: @00048954
Homework 3
American University of Sharjah
Faculty of Engineering and Architecture
ESM 515 Engineering Economy and Statistics
Question 1:
a)
N=3 without replacement.
Sample Number
Outcomes
1
1, 3, 6
2
1, 3, 7
3
1, 3, 9
4
1
Name: Fadi El Refai
ID: @00048954
Homework 3
American University of Sharjah
Faculty of Engineering and Architecture
ESM 515 Engineering Economy and Statistics
Question 1:
a)
N=3 without replacement.
Sample Number
Outcomes
Sample Means X i
1
1, 3, 6
X1 = 3
224ConfidenceIntervalEstimation
CHAPTER 8: CONFIssadDENCE INTERVAL ESTIMATION
1. The width of a confidence interval estimate for a proportion will be
a) narrower for 99% confidence than for 95% confidence.
b) wider for a sample size of 100 than for a samp
Discrete Random Variables
Definition 1 A random variable, denoted X, Y, Z, . is a variable whose results depends on chance. A random variable is discrete if it assumes a nite or countably
innite number of values.
Example 1 A coin is tossed 3 times. Let X
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Summer 2010
7. Let (X, Y ) be a couple of random variables
with joint pdf
f (x, y) = e(x+y) , x > 0 , y > 0
Let U = X + Y and V = X/Y .
Final Exam
a. Find the joint pd
Stat 230 - Final (Summer 10)
T. Tlas
=
Please answer questions 1,2,3,5 and 6 on the same sheet of paper on which they are written.
Question 4 has an additional sheet for you to write you answer on. Any part of your answer
written on the wrong page will n
American University of Beirut
STAT 230
Introduction to Probability and Random Variables
Fall 2007
Final Exam
Name:
.
ID #:
.
Exercise 1 Let X1 , X2 , X3 be three independent random variables with binomial distributions
b(4, 1/2), b(6, 1/3), and b(12, 1/6)
American University of Beirut
5) Suppose that two fair dice have been tossed
STAT 230
and the total of their top faces is found to be
divisible by 5. Find the probability that both
Introduction to Probability and Random Variables
of them have landed 5
Spr