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1. A study examining if administering a medication A and participating in regular aerobic exercise is associated with improvements in patient anxiety post myocardial infarction. In the final regression model the R square value is 0.27. U know this means:
A. Exercise and administering medication A improves anxiety seen post myocardial infarctionB. Exercise and administering medication A does not improve anxiety seen post myocardial infarctionC. Exercise and administering medication A explain 27% of the variance seen in anxiety post myocardial infarction.D. Exercise significantly improves anxiety seen post myocardial infarction 27% of the time. 2. When studying the relationship between ankle-brachial blood pressure index and peripheral vascular disease the researchers have a significant R square. They then add a second independent variable of a pain scale. The R square in the model that includes both
independent variables is significant but the R square change is not. You know this means:
A. Having both variables in the model explains significantly more variation in peripheral vascular disease.B. The second variable added may not be significant and should be examined furtherC. Because the model is significant both variables should be includedD. The R square change only matters with the first variable 3. In regression model, to determine the expected impact a change in the indecent variable will have in the value of the dependent variable in a regression model the value to report is:A. The beta coefficientB.the p valueC. The constantD. The constant plus the error term 4. If researchers add independent variables to a regression model which are significant the effect on the R square value wifi be:A. To increase itB. To decrease itC. There will be no changeD. unable to determine 5. If a researcher adds independent variables to a regression model that are not significant you will be able to determine this by looking at:A. R square for the modelB. Unstandardized coefficient for the variableC. Standardized coefficient for the variableD. P value for the variable 6. A negative beta coefficient tells you that when there is a one unit change in the corresponding variable the dependent variable:A. Does not changeB. IncreasesC. DecreasesD. Unable to determine 7. If a study examining gulf war syndrome reports a significant odds ratio of 4.5 associated with exposure to depleted uranium in returning veterans you know this means:A. Veterans who were exposed to depleted uranium are more likely to have gulf war syndrome than those who were notB. The chance of getting sick after an exposure to depleted uranium is 4.5%C. Veterans who were not exposed to depleted uranium are 95.5% more likely to be healthy compared to those who were exposedD. There is a significant association between being a veteran and being exposed to depleted uranium 8. A researcher should use what regression technique to examine the relationship between death before age five and the presence of phenylketonuria, low birth weight and prematurity.A linear regressionB. Multiple regressionC. Logistic regressionD. Standard error of the estimate 9. A research team had difficulty with loss to follow up during their current study. This lead to a sample size of 56 rather than the anticipated sample size of 578 they wanted. They still have found significant results but the small sample size and significant number of independent variables would support reporting which result:A. Standardized beta collectionB. Adjusted R squareC. R squareD. Odds ratio 10. A researcher wishes to use logistic regression to examine the relationship between pressure ulcers and Braden scale score, immune function status, and repositioning schedule. Which example of a measure of pressure ulcers would be an appropriate for this technique?A. Stage l, stage ll, stage ll, stage Lviv levels of full thickness tissue lossB. Swab, fluid aspiration and tissue biopsy sampleC. Length and depth measurementD. Present or not present
A geneticist crosses a pure breeding strain of peas producing yellow, wrinkled seeds with one that is pure breeding for green, smooth seeds.
Explain how a non-evolution-focused field in biology benefits from evolutionary thinking. Provide specific examples. Also, defend the notion that ignoring evolution would be "dangerous" to human-kind.
Which one of the following statements about the structure shown above is correct?
There are three main types of coat protein associated with transport vesicles. What is the general purpose of these coat proteins? and where would each of the three types be found in the exocytotic and endocytic pathways of the cell
Amino acids are acids because they possess which function group?
Determine where are the hydrophobic or hydrophilic residues concentrated? Where does your mutation fall relative to these clusters and to the inside or outside of the protein?
What procedure ensures that pre-mRNA processing is co-transcriptional? Disucss ow are all three steps of processing sequentially controlled?
Explain why warm-up exercises increase myosin-ATPase activity. Describe how increasing myosin-ATPase activity affects muscle contraction.
The parents of the neonate described above ask you about the risks for similar birth defects in their future offspring. You mention that supplementation of the martenal diet can reduce the incidence of neural tube defects. What is this important d..
As you work your way from the outside of a young stem to the inside, you will encounter the following tissues in which order? If the soil water potential (?W) is -0.20 MPa and the water potential (?W) inside a root hair is +0.10 MPa, water will flow:
Explain a single procedure that could be used to isolate the Con A Receptor from this preparation. Propose two ways the photosynthesis process could be improved to fix more CO2 than normal and the plant productivity can be increased. Be specific abou..
purposethe primary goal of this exercise is for the student to further examine evolution from the perspective of two
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