Level of Significance (alpha) 0.010 0.010 0.010 0.010 Critical Value (lower tail) -2.576 -2.576 -2.576 -2.576 Critical Value (upper tail) 2.576 2.576 2.576 2.576 Hypothesized value 12 12 12 12 Standard Error 0.040 0.040 0.038 0.038 Test Statistic -1.027 0.713 -2.935 2.161 p-value 0.304 0.476 0.003 0.031 Only sample 3 leads to the rejection of the hypothesis H0: µ = 12. Thus‚ corrective action is warranted for sample 3. The other samples indicate H0 cannot be rejected and thus from all
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standard deviation were used to describe the length of labor. These were appropriate since mean and standard deviation can be calculated on an interval level of measurement. 3. Range could also be used to describe the length of labor since this statistic can be used on interval data with no natural zero point. 4. The distribution of scores was similar for the experimental and control groups for length of labor. The experimental group had a mean of 14.63 hours and the control group had a mean of
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More 19 Confidence Interval Problem Answers AP Statistics Quiz A – Chapter – Key A statistics professor asked her students whether or not they were registered to vote. In a sample of 50 of her students (randomly sampled from her 700 students)‚ 35 said they were registered to vote. 1. Find a 95% confidence interval for the true proportion of the professor’s students who were registered to vote. (Make sure to check any necessary conditions and to state a conclusion in the context
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America Vs. Obesity Imagine having a son‚ daughter‚ friend‚ or even a possible acquaintance that happens to be 10pounds over their general weight range. 10 pounds may not seem too much in this day and age but being diagnosed “obese” also means the chance of facing multiple health risks‚ psychological damage‚ and other life affecting illnesses. Obesity is a rapidly increasing disease that is spreading across America in children that must be faced and put an end to now. Some say the “children are
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Fast food and obesity Americans are heavier than ever before and‚ according to the CDC (Center for Disease Control and Prevention) approximately 127 million adults in the U.S. are overweight‚ 60 million adults are obese‚ and 9 million adults are morbidly obese. Obesity is a medical condition in which excess body fat has accumulated to the extent that may have an adverse effect on health‚ leading to reduced life expectancy and/or increased health problems. Obesity increases the likelihood of various
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Addressing the issue of childhood obesity Lenora Wallace ENG 122: English Composition II Instructor‚ Cicely Denean-Cobb February 14‚ 2011 Childhood obesity is increasing in different ethnic groups in both gender and all across the world. Let me start off by saying that childhood obesity has become a deadly disease in united state it important thing that should know firstly over other thing in life. Many parents are getting worried about their children being obese. First of all‚ combining
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The Atlanta Public Schools is experiencing low test scores and students failing the Georgia High School Graduation Test in English‚ Math‚ Science‚ and Social Studies. There are many decisions the school system must make to eliminate a low percentage of test scores and failure. This paper will focus on formatting information gathered on the test scores. By examining the central tendencies of the data‚ Team Solutions will first calculate the measures of central tendencies and dispersion. The team
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mind that a statistic is only worthwhile when it satisfies the assumptions on the test. Knowing whether the assumptions are met is dependent on the competence of the person running the test. Just because two things seem to have a relationship‚ could it have been by pure chance? It cannot be determined by causation and effect. The two variables have no effect on each other at all. Chapter 9 – How to Statisticulate Statisticulate is the process of misleading people using statistics. It is also
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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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Descriptive Statistics is used when describing certain aspects of an immediate group within the population. For example‚ we may want to describe a math class and compare it to a class of science. Things that we may want to use for comparison would be age‚ gender‚ and even math skills. Descriptive statistics would allow us to analyze all those different areas and provide a comparison to view similarities‚ differences and ratios. Before any study is to be observed certain factors would have to be ascertained
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