10) Multiple Choice (ONE answer)A researcher was studying whether education was the biggest determining factor for earning potential. Heclaimed that the more years of education an individual had, the higher was his/her earning potential, andthat this represents causation and correlation. What can be said about this claim?А.The claim is correct because the more years of education an individual has is positively correlated to andis the cause of a higher earning potential.В.The claim is incorrect because the more years of education an individual has is not necessarily the causeof him/her having a higher earning potential.С.The claim is correct because the more years of education an individual is negatively correlated to and isthe cause of a higher earning potential.D.The claim is incorrect because the more years of education an individual has is not correlated to a higherearning potential.

The strength and direction of linear relationship between two variables is measured by correlation.

Answered: A researcher was studying whether…

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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5. A study finds that spending time in nature correlates with good mental health outcomes in the general population. A media report says “Spending time in nature improves mental health!” Briefly describe two plausible scenarios in which the media report is wrong because the correlation is explained by (i) reverse causation and (ii) common cause. (One scenario for each: note that the two scenarios should be quite different from each other.)
What is negatively correlated?
3
3. A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause. If there is an underlying cause, state what the underlying cause is. If one directly causes the other, state which is the cause and which is the effect. (a) In Angela's class, the taller students got lower scores on the test. (b) As Thomas's income rose over the last 20 years so has his stress level.
Define the term relationship as a perfect positive cross-correlation?
11. Make a table that has a strong negative correlation. y 13
A zero correlation bewteen X and Y is least likely to occur if?
You plan to set up a production system that includes 2 machines of Model X and 3 machines of Model Y, which produce exactly the same type of product. The standard deviations for the daily outputs of Model X and Model Y are 5 and 10 products, respectively. If the correlation between their daily outputs is - 0.5, what would be the standard deviation for the daily output of your overall production system (2X+ 3Y)? O A. 52 О В. 13 ОС. 26 OD. 39
13. Perform a formal test for correlation on the chocolate consumption / Nobel prize winners data in chocolate_nobels.xls. H0: There is no correlation between chocolate consumption and the number of Nobel prize winners (=0) H1: There is a correlation between chocolate consumption and the number of Nobel prize winners ( is not 0) True or false: The null hypothesis should be rejected based on your analysis in the preceding questions. True or False???
A research study reports the results of a correlational study that shows a negative relationship between parent stress at work and the mental health of their children. What possible findings would show this? A. Parents who report higher stress at work tend to have children with higher mental well-being scores B. Parents to report higher stressed out work tend to have children with higher anxiety scores C. Parents who report lower stress at work tend to have children with lower anxiety scores D. Parents who report lower stress at work tend to have children with higher mental well-being scores
9. A researcher finds that for female applicants, the likelihood of being hired for a job increases as their work experience increases. However, for male applicants, the likelihood of being hired decreases as their work experience increases. This finding would suggestgender and work experience have no effect on likelihood of being hired for a job. a main effect of work experience (little or a lot). an interaction between gender and work experience. a main effect of gender (male or female).
A researcher speculates that because of differences in diet, Japanese children have a lower mean blood cholesterol level than U.S. children do. Suppose that the mean level for U.S. children is known to be 175. Let ? represent the true mean blood cholesterol level for Japanese children. What hypotheses should the researcher test? H0: ? = 175 versus Ha: ? > 165H0: ? = 175 versus Ha: ? < 185 H0: ? = 175 versus Ha: ? < 175H0: ? = 175 versus Ha: ? > 175H0: ? = 185 versus Ha: ? > 175

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