I need help figuring this one out please parts AHow many adults .pdf

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I need help figuring this one out please parts A How many adults must he survey in order to be 80% confident that his estimate is within 7 percentage point of the true population %? A. Assume that nothing is known about the percentage of adults who have heard of the brand. n=______? Solution alpha,a=0.20 Error,E = 0.07 p=0.50 Za/2 = Z0.10 = 1.28 n = [Za/2 / E]^2 * p(1-p) n = 83.59 n=84.

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I managed to do this in terms of polar coordinates. How would one solve this using the fact that T(z) = z^2? (2) Consider the map T: D D, where D is the unit disk in the plane, given by T(r cos theta, r sin theta) = (r^2 cos 2theta,r2 sin 2theta), Using complex notation, z = x + iy, the map T can be written as T(z) = z^2, Show that the Jacobian determinant of T vanish only at the origin. Thus, away from the origin, T is locally one-to-one. However, show that T is not globally one-to- one on 2 minus the origin. Solution T(z) = T(rcost, rsint) Consider z^2 = (rcost, rsint).(rcost,rsint) = r^2cos^2t+r^2sin^2t = r^2 = (x^2+y^2) where x =rcost and y =rsint Thus T(z) = z^2 T(z) = z^2 =0 only when r=0 or at the origin. As T(z) = z^2, T(-z) = (-z)^2 =z^2 Thus z and -z have the same image under T. T is not one to one..

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I hope someone can help me , I need to write a ten page paper on Probability by 215-2012. Is there any out there that can help me with this problem? Solution Probability is ordinarily used to describe an attitude of mind towards some proposition of whose truth we are not certain.[1] The proposition of interest is usually of the form \"Will a specific event occur?\" The attitude of mind is of the form \"How certain are we that the event will occur?\" The certainty we adopt can be described in terms of a numerical measure and this number, between 0 and 1, we call probability.[2] The higher the probability of an event, the more certain we are that the event will occur. Thus, probability in an applied sense is a measure of the likeliness that a (random) event will occur. The concept has been given an axiomatic mathematical derivation in probability theory, which is used widely in such areas of study as mathematics, statistics, finance, gambling, science, artificial intelligence/machine learning and philosophy to, for example, draw inferences about the likeliness of events. Probability is used to describe the underlying mechanics and regularities of complex systems. The word probability does not have a singular direct definition for practical application. In fact, there are several broad categories of probability interpretations, whose adherents possess different (and sometimes conflicting) views about the fundamental nature of probability. For example: Frequentists talk about probabilities only when dealing with experiments that are random and well-defined. The probability of a random event denotes the relative frequency of occurrence of an experiment\'s outcome, when repeating the experiment. Frequentists consider probability to be the relative frequency \"in the long run\" of outcomes.[3] Subjectivists assign numbers per subjective probability, i.e., as a degree of belief.[4] Bayesians include expert knowledge as well as experimental data to produce probabilities. The expert knowledge is represented by a prior probability distribution. The data is incorporated in a likelihood function. The product of the prior and the likelihood, normalized, results in a posterior probability distribution that incorporates all the information known to date. The scientific study of probability is a modern development. Gambling shows that there has been an interest in quantifying the ideas of probability for millennia, but exact mathematical descriptions arose much later. There are reasons of course, for the slow development of the mathematics of probability. Whereas games of chance provided the impetus for the mathematical study of probability, fundamental issues are still obscured by the superstitions of gamblers.[8] According to Richard Jeffrey, \"Before the middle of the seventeenth century, the term \'probable\' (Latin probabilis) meant approvable, and was applied in that sense, univocally, to opinion and to action. A probable action or opinion was one such .

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I have to do a project..no one stops at the sign in front of my house-but since defining a stop is too difficult, I am using whether or not the drivers use the brake or not. You would be surprised how many don\'t even brake at all. How do I get started with this? Choose random times and days to observe the stop sign? Can you just point me in the right direction? Thanks :) Statistics and Probability Comment Solution Why do you say that Project Management is the best method of implementing change? Although change occurs continuously in the world and in our daily lives it is rarely implemented that way in organisations but rather as a series of steps; a ladder of change. A new piece of legislation, market imperatives, management initiatives and new technology create projects that need to be managed, often across departmental or disciplinary lines. Project Management is a methodology and a discipline which can bring significant benefits to organisations by:- Ensuring limited resources are used on the right projects Harnessing the energy of staff in achieving beneficial change Managing complex changes in an organised way Assessing risks, defining goals and key success areas and setting quality objectives. However, every organisation has finite resources and, therefore, a limit to the number of projects it can initiate and control. Pushing too many projects through a resource limited organisation causes gridlock and stress. Managing the project portfolio efficiently is a fundamental principle of good project management. Because most projects involve new ideas and learning (even a project to build houses or flats may involve new materials or unusual soil conditions or there may be new initiative for tenant selection or co-ownership schemes) project management has evolved a discipline to manage the new and unusual. Its objective is to: define the project reduce it to a set of manageable tasks obtain appropriate and necessary resources build a team or teams to perform the project work plan the work and allocate the resources to the tasks monitor and control the work report progress to senior management and/or the project sponsor close down the project when completed review it to ensure the lessons are learnt and widely understood. It is this structured approach that makes project management the best method for change management. What is a project? A project is generally defined as a programme of work to bring about a beneficial change and which has:- a start and an end a multi-disciplinary team brought together for the project constraints of cost, time and quality a scope of work that is unique and involves uncertainty Examples of a project:- The development and introduction of a new services The development of a management information system The introduction of an improvement to an existing process Setting up a new care initiative The creation of a large tender or the preparation of a response to it. The production of a new customer newsletter, catal.

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I have no idea how to start this problem or how to format in Excel...help!! Solution There are a variety of formatting options available in Excel - conditional formatting, number formatting, text and general spreadsheet formatting techniques. With so many choices it is easy to get lost or miss some options altogether. Here you will find free step by step tutorials, how to\'s, general information, tips and shortcuts to help you format your spreadsheets effectively. Excel 2007 Negative Number FormatThis tutorial covers how to format a negative number in Excel 2007. The tutorial includes a step by step example of how to format a negative number in Excel 2007. Excel 2007 AutoFormatExcel 2007\'s Autoformat option gives you 17 styles to use to give your spreadsheets a professional look. Instructions on how to apply an autoformat style are included. Customize the Quick Access Toolbar in Excel 2007 The Quick Access Toolbar is used to store shortcuts to frequently used features in Excel. This tutorial shows you how to add the autoformat button to the Quick Access Toolbar. Formatting your Excel spreadsheets makes them easier to read and understand the important information. This series of Excel articles and tutorials, takes you through the process of formatting your Excel spreadsheets. Basic Formatting in Excel - Tutorial Part 1Excel offers a variety of formatting options including number, text, and worksheet formatting. This is the first part of a step by step tutorial, using these types of formatting effectively to enhance your spreadsheets. Basic Formatting in Excel - Tutorial Part 2Excel offers a variety of formatting options including number, text, and worksheet formatting. This second part of a step by step tutorial, covers using these types of formatting effectively to enhance your spreadsheets. Add and Delete Columns and Rows in ExcelThis series of articles cover the basics of how to add and delete columns and rows in Excel worksheets. It is often necessary to alter the layout of a worksheet due to the addtion or removal of data. Hide and Unhide Columns and Rows in ExcelThis series of articles cover how to hide and unhide columns and rows in Excel worksheets. Find Duplicates in Excel 2007 with Conditional FormattingThis article shows you how find a variety of duplicate data - formulas, numbers, dates, data records - in Excel 2007 using conditional formatting. The article includes an example of using conditional formatting in Excel 2007 to find duplicates. Excel 2007 Conditional Formatting for DatesThis article shows you how apply conditional formatting to cells in Excel 2007. The article includes an example of using conditional formatting in Excel 2007. Finding Above Average Values with Conditional FormattingThis article shows you how apply conditional formatting to cells in Excel 2007. The article includes an example of using conditional formatting in Excel 2007. Finding Below Average Values with Conditional FormattingThis article shows you ho.

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