Confidence Intervals and Hypothesis Testing Name: Math 256‚ Nelson 1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 1.5 deciliters. Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks had an average content of 2.25 dl. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters. Assume the
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Discrimination often reflects an abuse of power within an organisation‚ where members of one group of people yield greater power than others‚ generally women. It is linked with women’s disadvantaged status at work and‚ more generally‚ in society.(Frazier‚ P. A. and Cohen‚ B. B. (1992) ‘Research on the Gender bias against women: implications for counsellor training’. The Counselling Psychologist. 20: 141-158.) The matters of blatant employment dicrimination or sexual harrasment at work seems to be
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Definition: Statistics is the study of the collection‚ organization‚ analysis‚ interpretation and presentation of data. It deals with all aspects of this‚ including the planning of data collection in terms of the design of surveys and experiments. A statistician is someone who is particularly well-versed in the ways of thinking necessary for the successful application of statistical analysis. Such people have often gained experience through working in any of a wide number of fields. Some
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BICOL STATE COLLEGE OF APPLIED SCIENCE AND TECHNOLOGY NAGA CITY HISTORY OF STATISTICS Group 3 Members: Tricia Mae Berja Michelle Lee Desiree Basmayor Mica Rubio Gian Perucho Ivan Ricafort Ms. Donnalyn Matamorosa Dominic Bobis Teacher Alex Obligado Ancient Times (3000 BC – 27 BC) * Pictorial representation and other symbols were used for Statistics back in the days. (To record numbers of people‚ animals‚ etc.) * In Babylonia and China‚ population is
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Descriptive Statistics 1.1 Descriptive vs. Inferential There are two main branches of statistics: descriptive and inferential. Descriptive statistics is used to say something about a set of information that has been collected only. Inferential statistics is used to make predictions or comparisons about a larger group (a population) using information gathered about a small part of that population. Thus‚ inferential statistics involves generalizing beyond the data‚ something that descriptive
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Everywhere you go‚ everything you see‚ statistics is all around. I for one‚ did not realize how important and relevant statistics was in our everyday lives until taking this course. Everything is run by statistics; the kind of coffee available in Dunkin’ Donuts‚ the flavors of ice cream at Dairy Queen‚ and even the clothes we buy in stores. Statistics evaluates what works in our growing and complex society nowadays. All of these selections would not be available to us without the statistical
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History and Development of Statistics Simple forms of statistics have been used since the beginning of civilization‚ when pictorial representations or other symbols were used to record numbers of people‚ animals‚ and inanimate objects on skins‚ slabs‚ or sticks of wood and the walls of caves. Before 3000 BC theBabylonians used small clay tablets to record tabulations of agricultural yields and of commodities bartered or sold. The Egyptians analyzed the population and material wealth of their country
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LESSON – 1 STATISTICS FOR MANAGEMENT Session – 1 Duration: 1 hr Meaning of Statistics The term statistics mean that the numerical statement as well as statistical methodology. When it is used in the sense of statistical data it refers to quantitative aspects of things and is a numerical description. Example: Income of family‚ production of automobile industry‚ sales of cars etc. These quantities are numerical. But there are some quantities‚ which are not in themselves numerical
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Statistical Description of Data The word ‘Statistics’ has been derived from the Latin word ‘Status’ which means a political state. It has also it’s either to the Italian word ‘Statista’ or the German word ‘Statistik’ each one of which means a political state. Statistics is defined as “the collection‚ presentation‚ analysis and interpretation of numerical data”. In olden days‚ the data that was collected and maintained for the welfare of the people belonging to the state. We are thankful
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life. Though my career progression in the banking system including joining the RBI was not as a statistician‚ I must confess that the analytical ability and articulation skill based on sound knowledge of statistics‚ which I developed during my academic career both as a student and teacher of Statistics at BHU‚ greatly
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