Chapter 9
Inferences on Proportions
This
chapter
will
deal
inferences
on
proportions
hypothesis tests on them.
with
and
We will see how to employ the
standard normal distribution to
construct confidence intervals on p
and test hypotheses concerning its
va
7/20/2016
Distribution Function
Continuous Probability Distributions
Uniform Distribution
Exponential Distribution
Normal Distribution
QAM - I by Prof. Gaurav Garg (IIM Lucknow)
Uniform Distribution
X is a continuous random variable.
X takes the values in
MIDTERM REVIEW
A primatologist is interested in primate fossil records. She records the following esti—
mated weights in kilograms and estimated longevity in millions of years for four differ—
ent primate fossils, given in the table below. Assume that the
Info for the Stat 111 ﬁnal exam:
Review the case study worksheet from the in—class review session. T he following dozen
questions are a supplement to the cases to help you prepare for the type of multiple
choice question you will see from Chapters 1 7, 20
Question Number 1, year 2014
Q. Suppose an investor purchased m shares. Let two events A and B are defined as;
A: the market price of x shares was increased during a particular period, where 0 < x < m
B: the market price of y shares was increased during a
Stat 100 Final Exam Fall 2010
Each problem is worth 20 points. Do one problem per answer sheet, you may use the
back if necessary. All work must be shown to receive full credit. Calculators allowed.
1. a) (5 pts) What is the total area under a histogram?
Basic Statistics and R:
An Introductory Tutorial
M. Ehsan. Karim,
Eugenia Yu,
Derrick Lee
University of British Columbia
June 3, 2008
Contents
1 Introduction to R
1.1
1
Getting Started: Introduction to R . . . . . . . . . . . . . . . . . . .
1
1.1.1
Downl
Bayesian Statistics and Marketing
Peter E. Rossi
Graduate School of Business
University of Chicago
1101 E. 58th Street
Chicago, IL 60637
[email protected]
fax :773-702-2857
Greg M. Allenby
Fisher College of Business
Ohio State University
July 2
Statistics 102 Practice Multiple Choice Questions Final Exam
Question (1-4). An analysis is done on the SAT scores at Penn over a 20 year horizon.
The response was the Average SAT score for incoming students and the predictor was Time.
Data were available
STAT 212-502
May 10, 2010
Name
Final Exam
Instructions:
Make sure your exam has 6 different pages.
You have two hours to complete the exam.
You may use two formula sheets, a calculator and the statistical tables I posted at the
website. (If a required
Practice Midterm Exam for Stat 102
Instructions: The exam itself will be a semi—closed book exam. One page of notes (or
one page — two—sided) will be allowed. When performing hypothesis tests, clearly state
the null and alternative hypotheses and show the
Statistics 21
Problems from past ﬁnal exams.
1.
(10 points) A psychologist administrated a multiple-choice test to 122 college students. Each
question had ﬁve possible answers and only one was correct. The questions were taken from the
reading comprehensi
Statistics 101
Midterm Exam I
Question I
Monthly sales of candy (in units of millions of pounds) from a manufacturer are collected
over a five year period. Use the basic output from JMP to answer the questions below.
The output appears as Figure 1 on the
Qu estion’ 1
According to the National Highway Trafﬁc Safety Administration, 284 people died between 1990 and
2007 as a result of an injury caused by an airbag. Newer airbags Open at a speed proportional to the
speed of an impact, older, at a constant spe
Stat 135 Practice Final Exam
* True or False (no need to explain)
T F 1) A test statistic is used to measure the difference between the observed sample data and
what is expected when the null hypothesis is true.
T F 2) If a value has a standard score of —
1.
Final Examination
Closed book( except for tables ) , closed notes.
Use of calculators is permitted.
Write your responses on separate paper, NOT the examination,
Fasten all pages together.
Include name and identiﬁcation number.
Show details ofyour work
Statistics 100 Final Exam
PRINT Last Name First Name
Signature
Circle section: M1 (9am) C1 (noon) S 1 (2:30pm)
Instructions-
This is a closed book, closed notes exam. You have 3 hours to complete it.
Print and sign your name above, then circle your sectio
Statistics 200 Exam 1
Name:_
Each problem is worth the same total number of points. Show how you get your answers.
If you use a calculator function, then say what function you used and what you entered.
Here are a few formulas and expressions as reminders
Statistics 200 B1 Exam 2
Name:_
Closed book and notes. You are allowed a calculator and one 8.5 X 11 inch sheet
(two-sided) of formulas and other information.
Please be aware that assisting another student on the exam or receiving assistance from
anyone o
Sine. III: leiuI E: um i-‘oren. is either .1 ﬂ 1'? n 1-: :7 [_: "1 Wu.” am -[ ﬁn.” Mu}. [-1 gm I
PRINT Latt Neme_ _ Firtt Eleni-e
Fellewing instructions on this sheet earns. yen I extra eretlit point on the Final! If we have trouhle
reading you r name on
Hatﬁeld, Stat 211, Exam 1 . . . . . . . . . .Page 1 of9
Student Name
Student ID
Section
Signed:
Note: You must ﬁll in the above and turn in both the test and Seantron. Failure to
do so will result in a grade of zero (0).
Fill in this and the require
63 + 35 + 15
= 0.113
1000
0.032
P( A B)
(e) P ( A | B ) =
=
= 0.2207
(25 + 63 + 15 + 7 + 35) / 1000
P( B)
5
(f) P =
= 0.005
1000
(d) P ( A'B ) =
2-167.
(a) Let A denote that a part conforms to specifications and let B denote for a part a simple
component.
STAT 100B Midterm
Problem 1 Suppose X17X27 .7Xn ~ Exp()\). The density function of Exp()\) is 2
A64” for a: Z 0, and = 0 for a: < 0.
(1) Suppose we want to estimate A by solving the estimating equation Pr(X > 1) =
m /n, where m is the number of Xi that ar
FINAL EXAM - Statistics 2103
Usethefollowingto answerquestionl:
In a statisticsclasswith l36students,the professorrecordshow much moneyeachstudenthasi n their
possessionduringthefi rstclassof thesemester. The histogrambelowshowsthedatacol lected.
EU
50
Statistics 200 Honors
Exam 1 with solutions
This 20—point test has three pages, front and back. Write your name at the top of each page.
Show as much of your work as possible; partial credit is possible.
Question 1 (6 points)
An experiment is performed
Practice Exam 1
Problem 1
Based ofthe graph below answer questions 1 (a) and (b)
Which of the following best describes the distribution above?
A. Negative Skewed , so the mean is greater than the median.
B. Negative Skewed, so the median is greater th
STAT 201
Some Final Examination Questions
1. A researcher suspects that male university students tend to commute
longer distances than female students to university. The researcher
draws a simple random sample of 25 female students and an indepen-
dent si