Find Solution:1. Data:2. Assumption:3. Hypothesis:4. Test statistic:5. Decision Rule:6. Decision: ExercisesEscobar performed a study to validate a translatedversion of the Western Ontario and McMasterUniversity index (WOMAC) questionnaire used withspanish-speaking patient s with hip or kneeosteoarthritis . For the 76 women classified with severhip pain. The WOMAC mean function score was 70.7with standard deviation of 14.6 , we wish to know if wemay conclude that the mean function score for apopulation of similar women subjects with sever hippain is less than 75 . Let a =0.01Text Book : Basic Concepts andMethodology for the Health Sciences

Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Answered: Exercises Escobar performed a study to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Give three real-world examples of an theoretical distribution of data.
The higher the level of significance, the more prone to errors is the decision. True or false?
You need to use Stata to look up the dataset and its variables. Use Stata Companion Textbook. (Dataset: NES. Variables: spend8, [pw=nesw].) The NES dataset contains spend8, which records the number of government policy areas where respondents think spending should be increased. Scores range from 0 (the respondent does not want to increase spending on any of the policies) to 8 (the respondent wants to increase spending on all eight policies). The NES, of course, polls a random sample of U.S. adults. In this exercise you will analyze spend8 using the mean and lincom commands. You then will draw inferences about the population mean. (Remember to specify nesw as the probability weight.) The spend8 variable has a sample mean of ______. Make sure you use [pw=nesw] so your results are nationally representative. There is a probability of .95 that spend8’s true population mean falls between a score of ______ at the low end and a score of ______ at the high end. A student researcher…
A categorical variable with multiple categories is converted to sufficient indicator variables for inclusion in a model. Will those indicator variables be correlated to one another? CLearly explain
R Studio library(poliscidata) 2. (Dataset: nes. Variables: dhsinvolv_message, polknow_combined.) Online political activism is a relatively new phenomenon. In recent years, online social networks like Facebook and Twitter have become part of our everyday experiences and, for many people, a forum for political news and debate. From your own personal experiences, you may have some impressions about who is likely to post political messages online, but our personal perspectives are bound to be limited and incomplete. Let's use the nes dataset to gain a better understanding of who uses social media to promote political ideas. Survey participants were asked whether they had posted a political message on Facebook or Twitter in the last 4 years and the dhsinvolv_message variable recorded their responses. 1. According to the nes dataset, roughly 20% of respondents indicated that they had posted a social media message about politics in the past 4 years. If the probability of an…
Does data reduction and balancing the target variable eliminate skewness?
Which of the following about open-source software is true а. A software that can be easily customized. b. A software that does not cost any money for usage. O c. All of these O d. A software that is freely downloadable and available on the internet
List and explain all three classes of decision making?
Three friends are having a debate. They recently read that on average Americans drive 16 miles each way when computing to work by car (ABC News, 2007). Friend A suspects that the mean for Colorado residents is likely lower than the national average because the population density of Colorado increases the likelihood that people live closer to their jobs, while friend B suspects the mean for Colorado residents is likely higher than the national average. Friend C does not find either argument very convincing and instead suspects that the mean for Colorado residents is no different from the US population mean. The three friends bet a dinner at Alinea and set out to resolve the debate. Using a random sample of 20 Colorado residents, they calculate the mean for their sample to be 14.23 miles with a standard deviation of 2.34. The three friends did not pay very close attention in their statistics class, so they need your help making sense of these numbers. Compute the 95% confidence…
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What is the difference between the predictor variable and the criterion variable?
It is analogous to consider the sample mean as the center of the balance point of our data True False

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