1. Following the explosion of the 25th space shuttle flight‚ which was caused by an O-ring failure in one or more of the booster rockets‚ data from the previous 24 flights were studied. The Temperature (F) at the time of launch and whether or not there was evidence of O-ring failures for each of the previous 24 shuttle flights was determined for each flight. A logistic regression relating the Failure of O-rings to the Temperature was obtained with the following result: Estimate Std. Error z value Intercept
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Problem Identification The Violent Crime Control and Law Enforcement Act of 1994 was created to solve the problem of high crime. To deal with the crime problem in our nation‚ there must be a balance approach between getting tough on the hard-core violent offenders‚ and prevention and treatment for nonviolent offenders‚ all within the context of punishment. The major crimes that were going on in 1994 were the war on drugs‚ gun violence‚ and juvenile violence(book‚ pg.470). It was suggested that police
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increase by 0.0953 billion dollars (c) Comment on the significance of model (α = 0.05) Hypotheses: H0: β1 =0 H1 : β1 ≠ 0 Decision rule: reject H0‚ if |tcalc|> |t(α/2‚ n-k-1)| Where tcrit = t (0.025‚ 98) =1.9845 Test statistic: t = = = 48.368 Decision: Reject H0 because t calc > t crit Conclusion: There is sufficient evidence to conclude that there is significant relationship between disposable personal income and PCE at 5% level of significance. (d) The
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QMT2033 BUSINESS STATISTICS Assignment for mid -term break 1. Most of the information technology developers claim that wireless connection would give speed of at least 11 Mbps compared to wired connection. A sample of 105 computers using wireless connection shows it gives a mean of 11.7 Mbps and a standard deviation of 2.3 Mbps. a) Do you think that the wireless usage should be implemented? Test at 7% significance level). b) Repeat the test by using p-value approach. 2. A jack is usually used
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Crime and the Criminal Justice System Monica Mois Introduction to Criminal Justice/CJS/201 November 10‚ 2014 Christle Sheppard Southall Criminal Justice System According to the University of Phoenix CJi Interactive activities (2014)‚ the definition of a crime is “a conduct in violation of the criminal laws of the state‚ the federal government‚ or a local jurisdiction‚ for which there is no legally acceptable justification or excuse”. It is a complex and very difficult definition to agree upon because
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BIO 2003 SUMMATIVE ASSIGNMENT 2 Introduction: The report analyses the result of a study on workers from brick and tile industries conducted by the Health and Safety Laboratory (HSL). HSL put down few criteria’s to the workers which being that neither of the workers from the tiles and brick industries should have worked in both the industries and that they did not smoke. The criteria’s put across was an assurance to attain reliable results. The essence of the study lies in detecting any difference
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Introduction Statistics is a set of tools used to organize and analyze data. Data must either be numeric in origin or transformed by researchers into numbers. For instance‚ statistics could be used to analyze percentage scores English students receive on a grammar test: the percentage scores ranging from 0 to 100 are already in numeric form. Statistics could also be used to analyze grades on an essay by assigning numeric values to the letter grades‚ e.g.‚ A=4‚ B=3‚ C=2‚ D=1‚ and F=0. Employing
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Statistics Real Life Example #2Article: http://america.aljazeera.com/articles/2014/10/21/us-ebola-airports.htmlMy article is covering the recent “Ebola Outbreak”. In this‚ people are direly afraid of catching the Ebola virus. They are even going as far as screening people in airports who come from‚ and travel to‚ places where Ebola is much more spread amongst the population (mostly in Africa‚ for now). The article quotes: “Some members of Congress have urged President Barack Obama to ban all travel
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DIVISIONAL PERFORMANCE MEASUREMENT The objective of divisional performance measurement is to develop performance measurement systems for divisions that are significant investment centers in large organizations. Such systems should: (1) provide information for economic decisions‚ (2) facilitate the control of division operations‚ (3) motivate managers to achieve high levels of divisional performance so as to further the objectives of the entire organization‚ and (4) serve as a basis for evaluating
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Running head: Misuses Statistics 1 Misuses Statistics Regena Kelley MAT126: Survey of Mathematical Methods Instructor: Zhimin Huang January 21‚ 2013 Misuses Statistics 2 Misuses Statistics Statistics and survey are misused and not accurate because of many factors. The types of these statistics are found suspect samples‚ asking Biased questions and misleading graphs. There are businesses that use these statistics with questions to convice people to accept
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