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Part 1. Basic Concepts of Statistics Basic Concepts of Statistics Every four years, we come in through an affliction, affliction, the presidential election. Months before the election, public media will affirm us that a poll conducted by the opinion inquiry shows that a scene gains support of of more than 50 per centum of voters. 1 Basic Concepts of Statistics 2 Testing Hypotheses: One-sample tests However, the blue percentage of support will be with with a mete 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 greet something nearly statistics. If you can non perform statistics yourself, it would be better to train a statistician right away. One-sample tests trifling meditation: Ho: ? ?0 resource hypothesis: Ha: ? ?0 3 4 What is a Hypothesis? The Null Hypothesis, H0 A hypothesis is a charter (assumption ) about a cosmos parameter: States the conduct or assertion to be tested simulation: The average out human body of TV sets in U.S.

Homes is equal to threesome (H0 : µ = 3 ) population mean Is always about a population parameter, not about a sample statistic moral: 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 antagonist of the null hypothesis Begin with the assumption that the null hypothesis hypothesis is t rue Similar to the notion of innocent unti! l turn up guilty e.g., The average be of TV sets in U.S. homes is not equal to 3 ( H1: ? ? 3 ) Refers to the positioning quo or historical 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, do it on our website: OrderEssay.net

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