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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Chapter-11 Testing of Hypothesis: (Non-parametric Tests) Chapter-11: Testing of Hypothesis - (Non-parametric Tests) 2 11.1. Chi - square ( χ )Test / Distribution 2 11.1.1. Meaning of Chi - square ( χ )Test 2 11.1.2. Characteristics of Chi - square ( χ )Test 2 11.2. Types of Chi - square ( χ )Test / Distribution 2 11.2.1. Chi - square ( χ )Test for Population Variance 2 11.2.2. Chi - square ( χ )Test for Goodness-of-Fit 2 11.2.3. Chi - square ( χ )Test or Independence
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What is Obesity? Description Obesity is a condition due to too much body fat‚ not too much muscle. It has been described as when a person has a body weight that greater than what is healthy for their height‚ but does not take into account the added weight of the persons muscle mass (Obesity Patient Education‚ 2013). This increased body fat percentage put one at risk for at least 30 different medical conditions. Often‚ too much
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Childhood Obesity: Are We Missing The Bigger Picture? Childhood Obesity Research and Its Purpose In the 21st century our country is facing criticism for failure to respond to a medical concern which specifically focuses on childhood obesity. The concern has been elevated to a state that health officials are calling it an epidemic. Childhood obesity is labeled an epidemic due to the rising death rates‚ health issues‚ economic and hospital costs. This epidemic also raises ownership responsibilities
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Test of Hypothesis – Large Sample Test Critical Value (Zx) | Level of Significance (x) | | 1% | 5% | Two tailed test | Z = 2.58 | Z = 1.96 | One tailed test | Z = 2.33 | Z = 1.64 | Q. Z= X- μ σ√n = x- μS.EX The mean height of a random sample of 100 students is 64” and standard deviation is 3”. Test the statement that the mean height of population is 67” at 5% level of significance. Solution: We are given n = 100
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Obesity claims the lives of one-third of adults and seventeen percent of children in the United States of America. (Solutions for Obesity). Those numbers are too high; but why are they higher than 185 other countries in the world? The United States is known around the world for being an obese country when people travel to the United States from other countries they are mind boggled by the portion sizes of American food. What foreigners also find crazy is how unhealthy America’s foods are; so why
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Mal J Nutr 10(1): 13-22‚ 2004 Childhood Obesity: Contributing Factors‚ Consequences and Intervention Sherina Mohd Sidik1 & Rozali Ahmad2 1 2 Department of Community Health‚ Faculty of Medicine and Health Science‚ Universiti Putra Malaysia‚ 43400 UPM Serdang‚ Selangor‚ Malaysia Ministry of Defence‚ Malaysia ABSTRACT Childhood obesity has been growing at an alarming rate and is the most common nutritional problem among children in developed as well as in developing countries. It is associated
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1 Does obesity lead to poor school performance? Estimates from propensity score matching Hongyun Han Department of Sociology‚ University of Wisconsin-Madison March 26‚ 2012 ABSTRACT High body weight is negatively associated with test scores among elementary and middle school students. Are these negative outcomes due to preexisting differences‚ or are they a casual effect of childhood obesity? To better understand the causal mechanisms underlying this pattern‚ I use a propensity score matching
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It´s widely known that developed countries are more likely to have obesity problems because peple tend to eat more falty and salty Weight is an extremely important issue Being overweight is linked to numerous health problems‚ including high blood pressure[->0]‚ heart disease and even cancer. From a medical point of view‚ this means is a big issue. Our views on body image mean that weight . Several factors are adding to that statistic: the inactive state of most people caught in the electronic
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Obesity is a problem that needs to be fixed. It’s a hard task to accomplish‚ but it’s possible we just need to get started. The main reason obesity is rising is because of the cheaply sold restaurant foods. My idea is to shut down unhealthy fast food restaurants‚ but that is obviously not possible. If unhealthy restaurants were eliminated‚ the economy would be in chaos. These businesses affect people horribly health wise‚ but economically it provides 3.7 million people jobs. Many people will be losing
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