خاصA moodle.unizwa.edu.om39خیر مبب حنیه بعدالوقت المتبقي 0:48:52الدرجة من 2.00P علم هذا السؤالWhich one of the following choicesdescribes a problem for which an analysis?of variance would be appropriateComparing the mean birth weights .A Oof newborn babies for three.different hospitalsComparing the proportion of .B Osuccesses for three differenttreatments of anxiety. Eachtreatment is tried on 100 patientsAnalyzing the relationship between .Cgender and opinion about capital.(punishment (favor or opposeNone of these .D OAnalyzing the relationship between .E Ohigh school GPA and college GPAالصفحة التاليةالصفحة السابقة

The ANOVA test is used to compare the population mean of more than 2 treatments.

Answered: خاص A moodle.unizwa.edu.om 39 خیر مبب…

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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.A researcher is collecting individual data by asking visitors in a train station in a medium sized town to fill in a questionnaire. It takes nearly 30 minutes to complete the survey questions. To encourage higher participation rate, the researcher provides a small financial incentive that is enough to buy a sandwich. The researcher wants to use this sample to make predictions about effect of using social media on health among the residents of the town. a. Explain the random sampling assumption, that is one of the Gauss-Markov assumptions for linear regressions. b. Do you think this assumption is satisfied in the sample collected by the researcher? c. What are the possible consequences of violation of random sampling assumption for predictions based on this sample?
?Which one of the following choices describes a problem for which an analysis of variance would be appropriate None of these A O Comparing the mean birth weights of newborn babies for three different hospitals BO Comparing the proportion of successes for three different treatments of anxiety. Each treatment is tried on 100CO patlents Analyzing the relationship between high school GPA and college GPA D O Analyzing the relationship between gender and opinion about capital punishment (favor or oppose) E O
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The table below shows data on a subsample of participants in the 7th examination of the Framingham Offspring Study. Characteristic n Sample Population Standard Мean Deviation Systolic Blood 10 121.2 11.1 Pressure Diastolic Blood 10 71.3 7.2 Pressure Total Serum 10 202.3 37.7 Cholesterol Weight 10 176.0 33.0 Height 10 67.175 4.205 Body Mass 10 27.26 3.10 Index Which of the following is the 95% confidence level for Systolic Blood Pressure 114.32, 128.08 120.98, 121.42 121.16, 121.24 112.16, 130.24
24- Refer to the following output, what does it refer to?* Breusch-Godfrey Serial Correlation LM Test: F-statistic Prob. F(2.122) Obs R-squared 0.200071 0.415180 Prob. Chi-Square(2) 0.8189 0.8125 O a. This a heteroscedasticity test indicating that there is heteroscedastieity O b. This a heteroscedasticity test indicating that there is no heteroseedasticity O c. This an autocorrelation test indicating that thereis autocorrelation O d. This an autocorrel ation test indicating that there is no autocorrelation 25- Refertc the fallowing cutpue what does the coefficient andp-value of
Question: 18 short answer Five Years Ago Today 82 88 112.5 54 45 36 The test statistic for the difference between the two population means is Select one: O a. -.47 O b. -3 O c. -.65 O d. -1.5 please
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Exhibit 10-1 Salary information regarding two independent random samples of male and female employees of a large company is shown below. Sample size Sampe mean salary (in $1000s) Population variance Male 64 44 128 Female 36 41 72 Refer to Exhibit 10-1. At 95% confidence, we have enough evidence to conclude that the O a. average salary of males is significantly lower than females O b. salaries of males and females are equal O c. average salary of males is significantly greater than females O d. null hypothesis fails to be rejected

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