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Signed in but can't access contentOxford Academic is home to a wide variety of products. The institutional subscription may not cover the content that you are trying to access. If you believe you should have access to that content, please contact your librarian. Institutional account managementFor librarians and administrators, your personal account also provides access to institutional account management. Here you will find options to view and activate subscriptions, manage institutional settings and access options, access usage statistics, and more. Some research suggests that first born children may have higher IQ scores Select one answer: than their later born siblings Do first-born identical twins have higher IQ 10 _ points scores than their second-born sibling? Data from a 1998 study were analyzed to determine whether first-born identical twins have higher IQ scores than their second-born siblings. Ten pairs of adult identical twins were assessed and their Full Scale IQ scores were calculated. Source: M. J. Tramo, W. C. Lodtus; T. A. Stukel, R L. Green, J. B Weaver; and M: S. Gazzaniga. "Brain Size, Head Size, and Intelligence Quotient in Monozygotic Twins " Neurology 50,1246-52 The following hypotheses were tested: Ho: Ha = 0 Ha: Pa < 0 The following is the (edited) output for the test: Sample N Mean StDev SE Mean First-born 10 112.9 14.7 4.65 Second-born 10 108.7 11.3 3.57 Difference 10 4.1 13.4 4.23 Minnesota State University, Mankato Refer to the data in the table below. The IQ score and brain volume are listed for each of five different subjects. $$\begin{array}{|l|l|l|l|l|l|}\hline \multicolumn{2}{|l|} {\text { IQ Score and Brain Volume }} \\\hline \text { Subject } & 1 & 2 & 3 & 4 & 5 \\\hline \text { IQ Score } & 87 & 127 & 101 & 94 & 97 \\ \hline \text { Brain Volume }(\mathrm{cm} 3) & 1035 & 1034 & 1173 & 1347 & 1029 \\\hline \hline \end{array}$$ Context of the Data Refer to the given table of measurements. Is there some meaningful way in which the IQ scores are matched with the corresponding brain volumes? If they are matched, does it make sense to use the difference between each IQ score and the brain volume that is in the same column? Why or why not? Is there some meaningful way in which each body temperature recorded at 8am is matched with the 12am temperature?Is there some meaningful way in which each body temperature recorded at 8 AM is matched with the 12 AM temperature? Yes. Each column of 8 AM and 12 AM temperatures is recorded from the same subject, so each pair is matched.
Does the IQ increasing software have statistical significance?There is neither practical significance nor statistical significance. The is a computer program that claims to increase your IQ score by 10 to 20 points.
Could the result from Part A be the actual number of adults who said that they play football Why or why not?No, the result from part (a) could not be the actual number of adults who said that they play footballfootball because a count of people must result in a whole number. The actual number of adults who play footballfootball could be 10821082.
What is the difference between statistical significance and practical significance can a treatment have statistical significance but not practical significance?While statistical significance relates to whether an effect exists, practical significance refers to the magnitude of the effect. However, no statistical test can tell you whether the effect is large enough to be important in your field of study.
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