The specific research questions in quasi-experimental and experimental tend to be similar to each other. True or False. The significance of the study may be omitted from the introduction of the paper. True or False. The set of specific questions is dependent on the types of quantitative research being performed. True or False. What can be the alternative title for "The power of physical activity" to make it a quantitative research title?

Q: Observational data are generated by designed experiments and therefore the independent x variables…

A: Experimental study: If the researcher influences or manipulates one of the variables in the study…

Q: Qualitative variables can be divided into two types:

A: In the given problem we have to answer the question, Qualitative variables can be divided into two…

Q: The strength of the relationship between two quantitative variables can be measured by

A: Correlation: The correlation of two variables is checked to identify the relation between two…

Q: The research question for this research design is: Do humans commit acts of altruism? I have created…

A: Altruism is the behavior in which an individual benefits the other individual without expecting…

Q: What problems might we encounter when using regression to measure causal effects?

A: Given: Regression is the Statistical method of detecting  exact relationship between dependent…

Q: Suppose you are to design an experiment for the following problems, identify the independent…

A: 4) IV= Amount of time     DV= Anxiety Level     Constant = Social Media used ( Facebook, Twitter,…

Q: Why Bayesian modelling and  analysis over others?

A: Bayesian modelling finds the best out of the uncertainty. Every state in the models is assigned a…

Q: The data shown below are from the same patients, measured before and after doses of insulin in 12…

A: We want to test the hypothesis   These data are paired data , so we use paired t test for finding…

Q: what would a positive association mean betwwen these two variables? briefly explain why a poaitive…

A: It is an important part of statistics. It is widely used.

Q: If we include an additional independent variable in our regression, the total sum of squares of our…

A: Given that

Q: Statisticians are often called upon to develop methods to predict one variable from other variables.…

A: Regression analysis estimates the effect that changing one independent variable has on the…

Q: A Statistics professor has observed that for several years students score an average of 112 points…

A:

Q: Given the regression line Ý = 2.5X +12, what is the predicted value of self-esteem where X = 1

A: Given that, regression line Ŷ = 2.5X +12, We have to find: what is the predicted value of…

Q: Briefly discuss the effect on a regression analysis of dependencies among the observations of the…

A: Dependencies among the values of the response variable:Presence of dependencies or correlations…

Q: what are some additional challenges we face in conducting multiple regression analysis?

A: Challenges that we face in conducting multiple regression analysis is :

Q: Many leaners perform well in grade 12 but are still not accepted into universities.explain two…

A: Given:- Since many learners achieve well in grade 12, they have nonetheless turned away from…

Q: Dr. Ahmed wants to study the relationship between blood pressure and heartbeat irregularities in his…

A:

Q: A companies HR manager has noticed that they are not retaining their talent. The HR manager believes…

A:

Q: My previous classmate researched on the relationship between children’s nutrition and their…

A: Independent variable : The independent variable (IV) is the characteristic of a psychological…

Q: What does it mean when one of the two main effects is significant?

A: Given problem Given that   What does it mean when one of the two main effects is significant ?

Q: You can use your regression analysis results to make which of the following conclusions? (Select all…

A: In a regression model, the factors are said to be significant if the p-value of the explanatory…

Q: Your math teacher Ms. Washington notices that students with calculators do better on her math tests…

A: Solution Causation and correlation are different and causation  do not provide correlation.

Q: How can I explain this for a presentation? Please help me My study was about The effect of…

A: Explanation for Presentation: 1. Start with explaining what is a pie chart and what kind of data can…

Q: Discuss what can go wrong and the caution that need to be exercised when using regression models.

A: Things that can go wrong and the caution that need to be exercised when using regression models are…

Q: Give a research problem using objective method

A: A research problem is a statement about a problem that needs to be solved, a condition that needs to…

Q: You just joined the quantitative research team as an independent consultant and wasn’t involved in…

A: Would leave the data or do data imputation to replace the them.  Suppose the number of cases of…

Q: What does it mean for a regression line to be the "best-fit" line.

A: The form of the simple linear regression line is given by,

Q: In a quantitative analysis where widowed people suffering with bereavement suffer with a poor…

A: Solution: Given that in a quantitative analysis where widowed people suffering with bereavement…

Q: Given the equation of a regression line ^y=2x-9, what is the best predicted value for a given x=3?…

A: Given Regression equation isY=2x-9If x=3y=?

Q: Explain what a dummy variable is and how it is used in regression analysis

A:

Q: create one null hypothesis, one directional research hypothesis, and one nondirectional research…

A:

Q: A researcher was interested in how much longer the heart rate recovery time is for untrained college…

A: Excel Procedure: Enter Untrained and Trained in Excel sheet>Data>Data Analysis>Select…

Q: How would a businessperson know whether linear regression would be the appropriate statistical…

A: Linear Regression :  A linear regression is a statistical model that attempts to show the…

Q: The Acme School of Locksmithing has been accredited for the past 15 years. Discuss how this…

A: Quantitative Variable  It is a variable in which the values are obtained by counting or measuring.…

Q: Suppose that the number of values generated was 500, not 50. How would that affect what you would…

A: Higher the sample size, lower the error(standard deviation) If we use 500 sample size( larger than…

Q: What are two variables that will be can be used in a  chi-square analysis based in social work? What…

A:

Q: What does the formulation of a research problem represents?

A:

Q: Why the regression line is a straight line rather than a curved line?

A:

Q: Overweight or obese adults from psychiatric programs were recruited and randomly assigned to a…

A: Consider the following table for necessary calculation.   Treatment Group Control group…

Q: If the estimated intercept of the regression equation is negative, we can say the estimated…

A: Let the regression equation is y= ax + b where y is dependent variable and x is independent…

Q: During the course of the studies reviewed in this chapter, each scientist or team of scientists…

A: Answer :

Q: A manager wishes to determine the relationship between the number of years her sales representatives…

A: Given : Number of years her sales representatives have been employed by the firm and their amount of…

Q: Explain some of the ethical issues involved in the use of the experimental model.

A: Let EM denote Experimental Model.

Q: Explain Conducting Qualitative Field Research?

A: Field research is a qualitative method of data collection.

Q: What percentage of the variation in infant mortality rate is explained by this model? Based on the…

A: The percentage of variation in dependent variable is explained by coefficient of determination R2.…

Q: Which of the following refers to a variable that cannot be controlled?

A: Variable refers to a value which keeps on changing.

Q: A discrete variable is A qualitative variable is

A:

Q: A student's grade classificaiton (i.e. senior, junior, etc) is considered quantitative.…

A: Given information A student grade classification (i.e. Senior, Junior) It is an example of…

Q: How does the general classification problem discussed in Section 17-3 differ from the general…

A: How does a generalized classification problem differ from a generalized problem analyzed with…