Hypothesis Testing I Pat Obi What is a “Hypothesis?” A statement or claim about the value of a population parameter: μ‚ σ2‚ p Pat Obi‚ Purdue University Calumet 2 Decision Rule 1. x 0 Z s n Compare calculated Z value to Z value from Table (critical Z value) Reject H0 if calculated Z value lies in the rejection/significance region (i.e. region) ALTERNATIVELY: 2. Compare p-value to Reject H0 if p-value < Pat Obi‚ Purdue University Calumet 3 Two-Tail Test Ex: H0: 0
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MECHANICAL TESTING ROSE SIMON Abstract The experiment consisted of two parts of investigation‚ Mechanical and Creep testing. Under mechanical testing‚ two medium carbon steel (04%) specimens that had been through different heat treatment were tested on tension and for hardness. One had been cold drawn and the other was normalised. The specimens were grinded using fine and coarse silicon carbide paper to give a smooth finishing before testing using a Vickers Hardness testing machine. The
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Jane Bensen 5th hour The Master of Steel: Andrew Carnegie Robert L. Heilbroner Thesis: In Andrew Carnegie‚ failures‚ such celebrating industrial power‚ but also integrity‚ of giving his money away can be seen of the Gilded Age America. Quote: “Unite!” “Let’s make a joint proposition to the Union Pacific‚ your company and mine. Why not organize a new company to do it?” This quote shows the author’s point that Andrew Carnegie was a wise man used his experiences to better benefit his
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Hypothesis Testing: Alzheimer ’s Disease Natalie Sullivan PSY/315 August 8‚ 2011 Deborah Suzzane Ph.D. Hypothesis Testing: Alzheimer ’s Disease One in eight American’s over age 65 are diagnosed with Alzheimer’s disease. This number continues to grow as the population increases. The number of people affected by Alzheimer’s is alarming. The Alzheimer’s Association (2011) estimates that 5.4 million Americans of all ages suffer from this disease. Team A will attempt to form a hypothesis stating
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1. Company background: Mention the sectors that the company operates in‚ main products/brand names‚ market share‚ geographies of operations‚ new developments‚ main competitors etc. Which business segment and/or geographical segment - generates most revenues‚ is the most profitable‚ employs the most capital & tangible assets 2. Company Management: Board Size & Composition –is the board diverse enough with reference to Gender‚ Age‚ Educational Background‚ Experience‚ independence etc. Has the
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Psychological testing - is a field characterized by the use of samples of behavior in order to assess psychological construct(s)‚ such as cognitive and emotional functioning‚ about a given individual. The technical term for the science behind psychological testing is psychometrics. By samples of behavior‚ one means observations of an individual performing tasks that have usually been prescribed beforehand‚ which often means scores on a test. These responses are often compiled into statistical tables
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Reflection on Guns‚ Germs‚ and Steel Jared Diamond: A Genius or a Nut Case? My Review of Guns‚ Germs‚ and Steel It was the prehistory of the world that drew attention to Diamond’s brain that gave him the wonderful thought of writing this book about how our world is today‚ with the differences of culture‚ cargo‚ religions‚ skin color‚ etc. One simple question his friend Yali asked‚ “Why is it that you white people develop so much cargo and brought it to New Guinea‚ but we black people had little
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to the workings of the human immune system. 8. The ELISA test can also be used to detect antibodies that are produced in response to a specific antigen. Using information about how you completed this ELISA experiment‚ outline a procedure for testing for antibodies in the blood. 9. Explain why in sudden outbreaks‚ it may be better to test for disease antigens rather than for antibodies. The antibodies are there to help and kill of the antigens‚ but don’t contain the whole DNA strand. The
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In Guns‚ Germs‚ and Steel‚ Jared Diamond opposed the idea that European civilizations have advanced further than their contemporaries in other continents because their inhabitants were intellectually superior. Instead‚ he supported the notion that some civilizations developed at a quicker pace than others because of the environmental differences that were present in the continents where they resided. Factors such as wildlife‚ climate‚ and the types of resources presented in an area have dramatically
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Mechanical Testing: Impact and Hardness Testing ME-3701-02 3rd March 2009 Ke Chen Abstract This experiment‚ as may be derived from the title‚ involves testing multiple metallic specimens to determine their toughness‚ strength and hardness. The three tests used to determine these characteristics are called the Charpy Impact test‚ tensile strength test and Rockwell Hardness test. As stated by www.key-to-steel.com {1}‚ “Charpy impact test method for metallic materials is specified by European
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