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Part II
Probability, Random Variables, and Sampling Distributions
Chapter 5: Probability and Random variable
Introduction
In inferential statistics, we use the sample to draw conclusion about population, but we can never be
certain our conclusions are cor
MATH 2300 Spring 2012
FINAL EXAM Version 1
Print Your Name:
For all problems, choose the answer that BEST answers the question.
1)
2)
3)
4)
5)
6)
One year, a survey asked the French people the following question, "How many cars do you have?"
Of the 965 pe
Answers to selected problems of Chapter 2
2.8
2.24
a) The scores of students (out of 100 points) on a very easy exam in which most score perfectly or nearly so, but a few score
very poorly skewed to the left because of the few who score poorly
b) The week
Math 2300 - Fall 2013
Class Test 01
Name
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) The table below shows the average income by age group for the residents of one town in the year 1)
1998.
2300 Final Review
November 30, 2014
Chapter 1
The Nature of Statistics
1.1
Statistics Basics
Descriptive Statistics consist of methods of organizing and summarizing data. Note: Descriptive statistics only summarize and organize the
data set at hand and d
Exam I Review
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Provide an appropriate response.
1) The table below shows the average income by age group for the residents of one town in the year
Review 03
Chapter 7,8 and 9
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) The test scores of 5 students are under consideration. The following is the dotplot for the sampling
distribution of the
Practice test1
Name_
This are just some practice questions. Their purpose is for you to get accustomed to
the format of the real test. The questions onthe actual test will test the same concepts
, but , will NOT be the same as on these practice questions.
Math 2300- Fall 2013
Review 01
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Provide an appropriate response.
1) The table below shows the number of new AIDS cases in the U.S. in each of the years 1
Higher Order Derivatives, Taylor Approximations
Second order partial derivatives can be defined just as in the one variable case. We simply differentiate partially twice to
obtain
fjj = (fxj )xj =
2 f
(fxj ) =
,
xj
x2
j
fkk = (fxk )xk =
2 f
(fxk ) = 2
,
x
Test1
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Provide an appropriate response.
1) Based on a random sample of 1000 people, a researcher obtained the following estimates of the
percentage
Test1
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Tell whether the statement is true or false.
1) A discrete variable always yields numerical values.
A) True
1)
B) False
Identify the variabl
PATHS, CURVES, and DIFFERENTIATION
Now we turn from surfaces to paths and curves in
3-space, but from a vector point of view. Let
r(t) = U R R3 = x(t) i + y(t) j + z(t) k
x(t), y(t), and z(t) which we assume have continuous derivatives. It is
r(t) as a po
EXTREMA of REAL-VALUED FUNCTIONS
Optimization of functions is just as important for functions of several variables as it was in one variable. Let's
first look at things graphically. The interactive surface to the right below is one we've met before. It's
DOT and CROSS PRODUCTS
So far we've added vectors, subtracted them, and multiplied by a scalar, but now it's time to 'multiply' two
vectors. There are two different products, one producing a scalar, the other a vector. Both, however, have important
applic
Gradient, Chain Rule, and Directional Derivatives
What's going to replace the derivative
f (x) of a function y = f (x) of one variable when f is a real-valued function
of two or more variables? Since slope now depends on direction, not just sign, we can e
SURFACES and SLICING
Just as having a good understanding of curves in the plane is essential to interpreting the concepts of single
variable calculus, so a good understanding of surfaces in
3-space is needed when developing the fundamental
concepts of mul
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Math 2300 Fall 2013
~t0
60 Exam 4(C119, 10, 11)
othesis test for the difference in two proportions (i.e. H0: p1 = p2 vs.
6"
/7,.<
1) When performanin a h
Ha: p1 :2 p2.) When we fail to reject the null hypothesis, we
:33b)\have committed a Type I erro
MATH 2300
Final Exam Review
Name_
Section_
Student Number_
Provide an appropriate response.
1) The finalists in an essay competition are Lisa (L), Melina (M), Ben (B), Danny (D), Eric (E), and Joan (J). Consider
these finalists to be a population of inter
Exam 2 Review Part I
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Determine the binomial probability formula given the number of trials and the success probability for Bernoulli trials.
Let X denot
MATH 2300-102: Statistical Methods, Summer I 2017
1
Instructor Information
Instructor: Shiva Shankar Rai
Office: MATH 117F
Office Hours: (M/T/W/Th/F) 09:00 - 09:50 am
Email Address: [email protected]
2
Course Information
Meeting Place: Math 111
Me
1.1
Statistics- Data & Probability
Data:
Primary- 1st hand data
Secondary 2nd hand, data you get form someone else
Population:
- Everything that can be taken into consideration [largest set]
Sample:
- Part of the population
- Chosen at random
Types of Sta
Chapter 1 Nature of Statistics
Tuesday, January 24th, 2017
1.1 Basics of Statistics
Population: all individuals or items under consideration for stat. study
(who you want to say something about)
Sample: part of population from which information is taken (