# Register now to access 7 million high quality study materials (What's Course Hero?) Course Hero is the premier provider of high quality online educational resources. With millions of study documents, online tutors, digital flashcards and free courseware, Course Hero is helping students learn more efficiently and effectively. Whether you're interested in exploring new subjects or mastering key topics for your next exam, Course Hero has the tools you need to achieve your goals.

5 Pages

### Chapter 21

Course: MATH 260, Fall 2009
School: Kalamazoo
Rating:

Word Count: 458

#### Document Preview

21: Chapter Comparing Two Proportions: Key Ideas Sampling distribution of the difference in sample ^ ^ proportions p1 - p2 successes from two populations. Then the sampling ^ ^ distribution of p1 - p2 : o Is approximately normal, o Has mean p1 - p2 (the difference in the population proportions of successes) o Has standard deviation ^ ^ Let p1 and p2 be the sample proportions of p1 (1 - p1 ) p2 (1 - p2 ) + n1...

Register Now

#### Unformatted Document Excerpt

Coursehero >> Michigan >> Kalamazoo >> MATH 260

Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

Course Hero has millions of student submitted documents similar to the one below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
21: Chapter Comparing Two Proportions: Key Ideas Sampling distribution of the difference in sample ^ ^ proportions p1 - p2 successes from two populations. Then the sampling ^ ^ distribution of p1 - p2 : o Is approximately normal, o Has mean p1 - p2 (the difference in the population proportions of successes) o Has standard deviation ^ ^ Let p1 and p2 be the sample proportions of p1 (1 - p1 ) p2 (1 - p2 ) + n1 n2 o Assumptions: The data are from an SRSs from the corresponding populations. The populations are at least 10 times as large as the corresponding samples. The sample sizes are large. N.B.: Specific guidelines for significance tests and confidence intervals are given below. -2- Testing the equality of proportions from two samples: z test for H 0 : p1 = p2 1. State the problem in context 2. Formulate a. Define the parameters of interest b. State H 0 and Ha . 3. Solve a. Check that the conditions are satisfied (see below). b. Compute two-sample z statistic z = ^ ^ p1 - p2 ^ ^ p (1 - p ) 1 n1 + 1 n2 ^ where p is the pooled sample proportion defined as ^ p = count of successes in both samples combined count of observations in both samples combined . -3- 4. Conclude in the context of the stated problem. using the Rossman-Chance applet for critical normal values. Be sure to specific the alternative hypothesis correctly. Note: This test can carried be out by hand calculation Conditions for use of the z significance test for comparing two proportions: o The data are from two independent SRSs. o The population is at least 10 times as large as the sample. o The counts of success and failures are each 5 or more in both samples. Plus four z confidence interval for p1 - p2 1. State the parameter estimation problem in context 2. Formulate a. Define the parameter of interest b. State the level of confidence to be used -4- 3. Solve a. Check that the conditions are satisfied (see guidelines below). b. Calculate the level C confidence interval for p1 - p2 using the plus-four interval: ( p1 - p2 ) z where * p1 (1 - p1 ) p2 (1 - p2 ) + n1 n2 n1 = n1 + 2 and n2 = n2 + 2 p1 and p represent the plus four estimate 2 of p and p respectively: 1 2 p1 = ...

Find millions of documents on Course Hero - Study Guides, Lecture Notes, Reference Materials, Practice Exams and more. Course Hero has millions of course specific materials providing students with the best way to expand their education.

Below is a small sample set of documents:

Purdue - CS - 348
create table bbusers ( email varchar(50), name varchar(30), password varchar(10), nickname varchar(30), primary key (email));create table postings ( postId integer(5) auto_increment, postDate datetime, postedBy varchar(50),
Western Washington - ESCI - 444
Other burrow structures in the mudBioirrigation and pore-water transport Ways to quantify pore-water transport Mathematics Tracers (222Rn, dyes, bromide)Quantifying pore water transport Diagenetic equation (see board) Enhanced diffusion A
Western Washington - ESCI - 444
Announcements Porosity data, assignment due date. My observations on flux experiment Incorporating tortuousity Use sediment-water interface data D' = D/2, where 2 1- ln(2)Nutrient cycling between sediments and overlying waterJ 0 = -D'dC d
Western Washington - ESCI - 444
Redox-sensitive metals ClassesRedox-sensitive metals in sedimentsMn, Fe, and trace element cyclingI: Reduction increased solubility (Fe, Mn) II: Reduction decreased solubility (U, Re, Mo) Significance Role in organic-matter and nutrient cy
CSU Channel Islands - EECS - 224
Election AlgorithmsSilberschatz, Galvin, &amp; Gagne Operating System Concepts, 6th Edition Presented by Moon C. KimOutline Overview of Election Algorithms Bully Algorithm Ring Algorithm1Election Algorithms Determine where a new copy of the c
Duke - CPS - 100
Printed by Owen L. Astrachan Apr 07, 03 10:10#ifndef _GRAPH_H #define _GRAPH_H #include &lt;string&gt; #include &quot;hmap.h&quot; #include &quot;tvector.h&quot;tgraph.hPage 1/2Apr 07, 03 10:10void clear();tgraph.hPage 2/2/* * This Graph class uses an adjacency
Purdue - MA - 351
Math 351Practice Problems For 3rd ExamApril 16The third midterm will cover the chapter 6 and sections 7.1-7.4. To prepare the exam, please study the materials which we studied in the class, including HW7, HW8, HW, and the following questions9 P
East Los Angeles College - OPEN - 12276
Conservation Evidence (2007) 4, 88-93www.ConservationEvidence.comHand pollination to increase seed-set of red helleborine Cephalanthera rubra in the Chiltern Hills, Buckinghamshire, EnglandNewman R.D., Showler A.J., Harvey M.C. &amp; Showler D.A.12
East Los Angeles College - OPEN - 15317
3rd International Workshop on Advances and Applications of Problem FramesThein T. TunDepartment of Computing The Open University Milton Keynes, UKJon G. HallDepartment of Computing The Open University Milton Keynes, UKLucia RapanottiDepartmen
Western Washington - ETEC - 474
ETec471 Project Description Outline1) Functional Description (written) a. Introduction - A short overall description of the project (from proposal). b. Description and sketch of all project hardware and applications. Include maximum dimensions. c.
Western Washington - MIS - 323
MIS 323 Telecommunications Winter Quarter 2007MIS 323 - TELECOMMUNICATIONS Winter Quarter 2007 COURSE OUTLINEINSTRUCTOR:Mr. David Auer / PH 408 / 650-2904 / OH: MW 10:00-12:00 or by arrangement PREREQUISITES: MIS 220 or Demonstrated skills in M
Duke - CPS - 006
East Los Angeles College - OPEN - 9265
East Los Angeles College - OPEN - 5636
Technology is a form of politics and not a form of sciencePosted: 06-Apr-2005 17:56 open2.net Reith Lecture Forum John Monk People who call themselves scientists work with molecules and atoms, planets and galaxies, plants and microbes, light and x-r
East Los Angeles College - OPEN - 4151
Networks as Transnational Agents of DevelopmentAbstractThe term network has become a hallmark of the development industry. In principle networks have the potential to provide a more flexible and non-hierarchical means of exchange and interaction t
Arkansas Fort Smith - A - 337
Astronomy 337: Instructions for. PhotVis: A Photometry and Visualization Application in IDL Rob Gutermuth; last revised on 31 March 20091. Type `photvis' at an IDL prompt. 2. Open a FITS file (or restore a saved PhotVis session), located under the `
Arkansas Fort Smith - A - 337
Aperture Photometry in Practice AST337 In-Class Exercise (hand me in before you leave!) 7 April 2009We'll be working with the following image: ~/ast337idl/examples/m67_r.fits in both ATV and PhotVis. Part I: Point Spread Function (PSF) shape, Full-W
Western Washington - MYWEB - 125
Western Washington UniversityMATH 125-40596: Calculus and Analytic Geometry II. Fall 2008Course Description: This class is a continuation of Single Variable Calculus as covered in MATH 124. Whereas MATH 124 focused on the derivative, MATH 125 will
Western Washington - MYWEB - 225
Western Washington - MYWEB - 226
1Western Washington University: MATH 226. Limits &amp; Series. Spring 2006. Instructor: T.GlimmExam 3Name: The allocated time for this exam is 50 minutes. This is a closed book exam. Write your name in PRINT on this page and on page 7 in the desig
Allan Hancock College - ACG - 2168
FIRST INTeRNATIONAL SeMINAR ONSafe and Rapid Development Mining67 May 2009, Novotel Langley Hotel, Perth, Western AustraliaREGISTRATION &amp; PROGRAMMEThe Australian Centre for Geomechanics will present the First International Seminar on Safe and
Western Washington - MYWEB - 224
Western Washington UniversityMATH 224-10038: Multivariable Calculus and Analytic Geometry I. Winter 2008Course Objectives: In Calculus I, you studied functions that depended on one variable: y=f(x). In this course, we will study functions that dep
Western Washington - MYWEB - 224
Sveriges lantbruksuniversitet - BISC - 307
BISC 307 - ANIMAL PHYSIOLOGYSpring 2009Action Potential Initiation and Conduction in a Myelinated NerveAIM Study various properties of a compound action potential (CAP) recorded from the sciatic nerve of a frog and relate these properties to the
Western Washington - AC - 255
Sociology 255 Fall 2008Exam 3Exam 3 score range = 26-76 (80 possible)Grade Distributions Exam3 39% 24 16 11 10 Exams 1-3 27% 28 24 16 5A B C D FNote: Seventeen (25%) of the people who took From B failed to notice that six questions were on
Western Washington - J - 101
JAPN 101 (Fall 2008)Lesson 11. Non-Basic Consonants 1.1 &quot;The Dots&quot;1 [ka] [ki] K~G [ga] [gi] [sa] [shi] S~Z [za] [zi] [ji] [ta] [chi] T~D [da] [di] [ji] [ha] [hi] H~B [ba] [bi] Notes and sound exactly the same 1.2 &quot;The Circle&quot; [ha] H~P [pa][k
Wisconsin - ENGR - 330
Allan Hancock College - PAGE - 25455
MINISTER FOR EDUCATION, SCIENCE AND TRAINING THE HON DR BRENDAN NELSON MPMINISTER FOR EMPLOYMENT AND WORKPLACE RELATIONS THE HON KEVIN ANDREWS MPJOINT MEDIA RELEASE16 June 2005 MIN XX/05FURTHER FLEXIBILITY TO ASSIST UNIVERSITIES ATTRACT AND RE
Michigan State University - ME - 461
Homework 4ME 461 Spring 091. An undamped system is being forced at a frequency that is making the oscillations very large. The magnification of oscillation is (X*k/f0) = 9.756 (two r values will cause this, use the larger one). The natural frequ
Michigan State University - ME - 461
Homework 6ME 461 Spring 09 Due Thursday 4/30/09 by 5:00 p.m.Use the above model of a system for this entire homework. 0 0 0 x (0) = 0 1. At t=0, x(0) = 1 3 Find X(t) for all three masses using Method 1 from the class notes (without
Allan Hancock College - PAGE - 25455
The University of Western Australia UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Thursday July 20th, 2006 at 3.30 pm in the Economics &amp; Commerce Conference RoomAGENDA ATTENDANCE Members are asked to si
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Thursday 17 April 2008 at 3.30pm in the Economics and Commerce Conference Room AGENDA ATTENDANCE Members are asked to sign the attendance sheet APOLOGIES Memb
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Thursday 18 October 2007 at 3.30pm in the Economics &amp; Commerce Conference Room AGENDA ATTENDANCE Members are asked to sign the attendance sheet APOLOGIES Memb
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Tuesday May 17th, 2005 at 3.30 pm in Conference Room 1, The University Club AGENDA ATTENDANCE Members are asked to sign the attendance sheet APOLOGIES Members
Allan Hancock College - PAGE - 25455
Attachment A UMG 16 August 2007STRATEGIC PROCUREMENT AN OVERVIEW1 INTRODUCTIONThe effective management of procurement is an essential element to the efficiency and effectiveness of the University's academic and support services. Strategic Proc
Michigan State University - ME - 461
52 100 -1-5 0 10 5 0 -5 -10 0100200300400-2 0100200300400100200300400
Michigan State University - ME - 461
function dampedVibe(zeta,wn,A,B) t = 0:.02:pi*2; f=exp(-zeta*wn*t); g=A*cos(wn*sqrt(1-zeta^2)*t)+B*sin(wn*sqrt(1-zeta^2)*t); figure(1) subplot(2,2,1) plot (f,'black') subplot(2,2,2) plot (g) subplot(2,2,3) plot (f.*g) subplot(2,2,4) plot (f,'black')
Michigan State University - ME - 461
1 0.8 0.61 0.5 00.4 0.2 0 0 100 200 300 400 -0.5 -1 0 1 0.5 0 -0.5 -1 01002003004001 0.5 0 -0.5 -1 0100200300400100200300400
Allan Hancock College - PAGE - 25455
UNIVERSITY POLICIES PROJECT UPDATE UMG 21 June 2007Aim of Project To create a University Policy framework (which explains what constitutes a University Policy, what is the approval process, what controls the University wishes to impose) To establ
Allan Hancock College - PAGE - 25455
The University of Western Australia UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Thursday 17th August 2006 in University Club Case Study roomAGENDA ATTENDANCE Members are asked to sign the attendance s
Allan Hancock College - PAGE - 25455
The University of Western Australia UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Tuesday August 16th, 2005 at 3.30 pm in the Economics and Commerce Conference Room (Room 373), Third floor Economics and C
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Tuesday July 20th, 2004 at 3.30 pm in the Economics &amp; Commerce Conference Room, 3rd Floor, Economics Building. AGENDA ATTENDANCE Members are asked to sign the
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Tuesday July 15th at 3.30 pm in the Economics &amp; Commerce Conference Room, 3rd Floor, Economics Building. AGENDA ATTENDANCE Members are asked to sign the atten
Allan Hancock College - PAGE - 25455
UNIVERSITY MANAGERS GROUP The next meeting of the University Managers Group will be held on Thursday 18 September at 3.30pm in the Economics and Commerce Conference Room AGENDA ATTENDANCE Members are asked to sign the attendance sheet APOLOGIES Membe
Western Washington - MATH - 341
Chapter 1Section 1.1Probability is the branch of mathematical science that studies random events and phenomena. Statistics is the branch of mathematical science that deals with the collection, analysis and interpretation of data. It makes use of pr
Allan Hancock College - PAGE - 25455
The University of Western Australia UNIVERSITY MANAGERS GROUP The next meeting will be held on Thursday 19 October 2006 at 3.30pm in the University Club Case Study Room. The meeting will be followed by refreshments. AGENDA ATTENDANCE Members are aske
UNC - ECON - 165
Economics 165: Economics of Population Practice Midterm ExaminationProfessor B. Turchi March 30, 2005General Instructions: There are five (5) questions on this exam. Answer them all. Weights in grading are associated with each question. Try to wri
Western Washington - J - 103
Japn103Lesson 17Relative Clauses Clarification A relative clause is a sentence-like element that makes the meaning of the attached noun more specific (&quot;modification&quot;). modifies Takeshi is a student who came from Kyoto. Relative clause modifies
Allan Hancock College - PAGE - 25455
Sustainability at UWAFacilities Management University Managers Group, 21st June 2007Bruce Thompson - Director, Facilities Management Gerald Stack - Manager, Maintenance and Operations Gordon Walsh - Environmental Manager, Environmental Services Kyl
East Los Angeles College - OPEN - 11800
Reflections on Methods for applying Activity Theory to CSCW research and practice The AODM Approach Daisy MwanzaInstitute of Educational Technology The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom Abstract CSCW research and prac
East Los Angeles College - OPEN - 8623
Communication Aspects of Virtual Learning Environments: Perspectives of Early AdoptersKaren Kear Department of Information and Communication Technologies Faculty of Technology Open University Milton Keynes, MK7 6AA, UK k.l.kear@open.ac.ukAbstract:
East Los Angeles College - OPEN - 12564
Sketch-Based Interfaces to Support Collaborative Conceptual Design Learning Phebe Mann*, James Aczel, Eileen Scanlon and Martyn Cooper The Open University, UK Abstract In order to gain a better understanding of online collaborative conceptual design
Allan Hancock College - PAGE - 25455
Welcome to The School of Plant Biology The University of Western AustraliaWelcome to UWA Your first few weeks at UWA will be hectic, exciting and probably a bit daunting. But don't worry, we are here to help! Both the University and the School pr
Allan Hancock College - PAGE - 25455
FIXED TERM CONTRACTS ~EXPIRY NOTICES~Tom Polich HR Adviser HR SERVICES TODAY'S TOPICS. Current Process and Issues Advantages of New Proposal New Processes Non renewal of contract TemplatesNew Processes Renewal of Contract 12month
Trinity U - CSCI - 2323
BLAST11-28-20051Opening DiscussionWhat did we talk about last class? Do you have any questions about the last assignment? Dr. Livingstone and I talked about the project some. The basic idea is that you will be using BLAST both on the web and
Allan Hancock College - PAGE - 25455
UWA Access Control System ReplacementJohn Allcock Facility Management05/19/091Project Goals TheUltimate goal of this project is to replace the Access Control system with new technology which will benefit all users and the University. Minim
Allan Hancock College - PAGE - 25455
REVIEW OF THE HEAD OF SCHOOL &amp; SCHOOL MANAGER ROLES Bob FarrellyDirector Human ResourcesManager, HR Services &amp; Employee RelationsJenny RobertsonBACKGROUND University restructure 2001 2003 School Managers role was established as central p
Allan Hancock College - PAGE - 25455
ENTERPRISE BARGAINING ~WORKLOAD~Jenny Robertson Manager HR Services &amp; Employee RelationsPROPOSED CLAUSEWorkload needs to be: Reasonable Within scope of agreed positiondescription Balanced with family / social responsibilities Fair and equit
Allan Hancock College - PAGE - 25455
Organisational Renewal ProjectDrivers for change Ageing workforce; low PhD numbers Increased student intake; course uptake Skills shortages IT, Finance, gender imbalance, academic &amp; general Research findings Tight labour market Changes to fed
Allan Hancock College - PAGE - 25455
UTE PROJECT UPDATEProject Progress Testing Training UPK Training Tool &amp; System PreviewProject Progress On track Have begun the first phase of testingTesting 3 cycles of testing Delivery Testing System Testing End User Acceptance Testing