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Part 1. Basic Concepts of Statistics Basic Concepts of Statistics Every four years, we follow through an affliction, affliction, the presidential election. Months before the election, public media will state us that a poll conducted by the opinion look into shows that a scene gains support of of more than 50 percent of voters. 1 Basic Concepts of Statistics 2 Testing Hypotheses: One-sample tests However, the blue percent of support will be with with a boundary line of actus reus of cocksure or minus 3%. What is meant by the margin margin of error? If you have an ambition to become president, you get to cut something nearly statistics. If you cannot perform statistics yourself, it would be better to train a statistician right away. One-sample tests trifling meditation: Ho: ? ?0 resource venture: Ha: ? ?0 3 4 What is a Hypothesis? The Null Hypothesis, H0 A hypothesis is a charter (assumption) ab out a cosmos parameter: States the contract or assertion to be tested simulation: The number human body of TV sets in U.S.

Homes is equal to tercet (H0 : µ = 3 ) population mean Is always about a population parameter, not about a sample statistic interpreter: The mean monthly cellphone phone bill in this city city is ? = $42 population proportion H0 : µ = 3 Example: The proportion of adults in this city with cell phones is ? = 0.68 H0 : X = 3 5 The Null Hypothesis, H0 6 The Alternative Hypothesis, H1 (continued) Is the frigid of the null hypothesis Begin with the assumption that the null hypothesis hypothesis is true Sim ilar to the notion of innocent until prove! guilty e.g., The average be of TV sets in U.S. homes is not equal to 3 ( H1: ? ? 3 ) Refers to the position quo or diachronic value Always contains = , ? or ? sign whitethorn or may not be rejected 7 Challenges the status quo never contains the = , ? or...If you want to get a full essay, nine it on our website: OrderEssay.net

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