What is the appropriate statistical test to assess whether there is an association between obesity status (normal weight, overweight, obese) and 5-year incident cardiovascular disease (CVD)? Suppose each participant’s obesity status (category) is known along with whether they develop CVD over the next 5 years or not. I see two answers to this question - log rank test and chi-square test of independence.  Which is correct

Q: What is the appropriate statistical test to assess whether there is an association between obesity…

A: A Chi-Square test can be used in order to test the significance of the relationship between the two…

Q: What information is provided by calculations of the “chi-square” test statistic?

A: The chi-square test statistics, it could be calculated:

Q: (a) State the null hypothesis H, and the alternative hypothesis H,. Ho :0 H, :0 (b) Determine the…

A:

Q: Who is most likely to have prevalent coronary heart disease? Test if there are significant…

A: The table presents a comparison of risk factors between individuals with and without prevalent…

Q: to compare the BMI of men and women and also the life expetectancy of men and women. What type of…

A: To compare the BMI of men and women. Apply t-test to check the significant difference between the…

Q: Say you have collected data on the anxiety level in a student population before the pandemic.  You…

A: The question consisting of importance of Z test and descriptive statistics needed for Z test.

Q: Due to the economy, are Americans staying in their first professional job longer? This was a ques-…

A: Given that,

Q: What do the MS values represent in an ANOVA?

A: ANOVA is Analysis of Variance.

Q: What does “statistical significance” mean?

A: "Statistical significance" is a term used in statistics to indicate whether an observed effect or…

Q: What is the appropriate statistical test to assess whether there is an association between obesity…

A: Introduction: It is of interest to test whether an association exists between the obesity status of…

Q: Can the empirical rule be used on any population, why or why not?

A: Empirical Rule tells us that approximately every bit of data will be falling within three standard…

Q: What type of statistic test would I perform for this questions, Is there a relationship between…

A: Chi-square test:   A single simple random sampling is done with each individual being classified…

Q: True or false: if you did a retrospective study to determine the risk of disease for individuals…

A:

Q: If there is a main effect of age, is the main effect of age significant? Why?  Provide F-statistic,…

A:

Q: Research indicates that there may be a relationship between caffeinated coffee consumption and risk…

A: Given :       Caffeinated coffee     Depression <1 cup/wk >=1 cup/day 2-3 cups/day 4+…

Q: Think of the situation of rolling two dice. Let M denote the sum of the number of dots on the two…

A: Given information: It is given that the two dice are rolled simultaneously.

Q: What is the relationship between industrial production and the application of statistical…

A: Industrial production is a measure of output of the industrial sector of the economy. The industrial…

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A: From the given information we conduct t test for one mean

Q: whats an experimental hypothesis?

A: Hypotheses is the plural form for hypothesis. Hypothesis is a statement about the population…

Q: Assume that you are conducting an experiment where you impose a change on various treatments (hoping…

A: Analysis of variance is termed ANOVA, which is the "Separation of variance ascribable to one group…

Q: In using statistical test in business, business practitioners face two types of errors: type I and…

A: Type-1 and Type-2 Errors: In Hypothesis testing, based on a result of our test, we can reject the…

Q: To investigate the impact of texting while driving on road traffic accidents (RTA), two groups of…

A: Solution. Given to  investigate the impact of texting while driving on road traffic accidents (RTA),…

Q: Discuss the four assumptions of ANOVA.

A: ANOVA assumes that data is usually distributed. ANOVA also assumes the homogeneity of variance,…

Q: total years of education and an indicator variable for female (1 if yes, 0 otherwise). SUMMARY…

A: As due to the honor-code we are authorized to answer only 3 subparts for each question and that you…

Q: What are Sources of variability and F ratios in one- and two-factor ANOVAs?

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Q: e concept of "control"

A: External validity - It is the extent to which you generalize your findings to other situations and…

Q: I have a variable of housing status (stable vs. unstable ), and I am comparing it to the number of…

A: There are 2 variables; housing status (stable vs unstable) and number of times arrested.

Q: Imagine you are a statistical consultant and your client, a weightlifting supplement company, is…

A: Introduction: It is required to state the research question, identify the parameter, and provide the…

Q: Question 1 Are teacher evaluations independent of grades? Affter midterms, a random sample of 284…

A: The hypothesis are  H0:teacher evaluation are independent of mid term grades H1:teacher evaluation…

Q: Last year, the average math SAT score for students at one school was 475.  The headmaster introduced…

A: Introduction:Here, although the actual number of observations, true and observed values are given,…

Q: What do we call variance in the ANOVA equation, and what notation do we use to represent them?

A: Given information: The information about ANOVA is given.