When studies included in a systematic review are found to be heterogeneous, what type of statistical model should be used to combine the study’s findings? Question 5 options: a random effects model a chi-square model logistic regression model a linear regression model
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When studies included in a systematic review are found to be heterogeneous, what type of statistical model should be used to combine the study’s findings?
Question 5 options:
a random effects model
a chi-square model
logistic regression model
a linear regression model
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- A Researcher decided to put students into groups based on their Cumulative Weighted Averages and had four different groups. He then systematically selected one student from each group and assigned some clear roles and responsibilities. Here, the researcher used ……………………..in selecting the students. a.Simple random samplingb.Cluster random samplingc.Stratified random samplingd.Two stage cluster samplinge.Convenience sampling In a short sentence each, explain THREE of the sampling types indicated in the options aboveSelect ant article, and provide a reference link so your article can be accessed. (any)Read the article and provide a summary of the article and any research done. 2-3 paragraphs will be sufficient. Look at the statistics used in the article. What was the research question (hypothesis)? What parameter would be of interest in this study (population mean, population proportion, population standard deviation, etc.) What was the statistical test run in the analysis? (Did they run a regression analysis, Z-test, T-test, ANOVA, etc.) Write 2-3 paragraphs on this. Reflect on why you chose the article and its applicability to nursing practice. I was helped with this but it was on my old account please help again.If I set up a Chi square analysis and determine that I cannot reject the null hypothesis based on my data, but the null hypothesis should be rejected, what kind of error is that? a. Type II error b. Type I error c. Conservative error
- [S] (mM) v0 (mM/sec) 6 150 17 250 29 260 40 360 50 350 60 400 72 403 82 425 92 430 103 442 115 455 125 450 Km and Vmax obtained from the Lineweaver-Burk plot and linear regression analysis for the data in Table 2 are 16.9 mM and 503 mM respectively. Compare these values to the values obtained Vmax = 525.3 µM/sec Km = 20.70 µM . Which method, nonlinear regression or linear regression, is more tolerant to an experimental error? Note that lower substrate concentrations, which often have the greater error, have a greater effect on the slope of the line in the Lineweaver-Burk plot.Please do populations 4 and 5, I understand 1-3.Explain the factors that affect the validity of experimental data (controls, bias, correlation, statistics).
- What is the null hypothesis? Group of answer choices a)The hypothesis that any patterns in the observed data is due to chance alone and therefore significant. b)The hypothesis that the observed data is invalid c)The hypothesis that any patterns in the observed data is due to chance alone and therefore not significant. A scientist usually accepts a p-value (or alpha level) of 0.05 as the threshold value to reject the null hypothesis. Group of answer choices a)True b)FalseA regression line is a straight line which: a. is defined by an equation having 2 parameters: the slope and the intercept b. is parallel to one of the coordinate axes c. provides an inverse relationship between the values of two parameters d. is the asymptote of the sampling equationIn an experiment, the control group is used to: a Change the variable b Provide a baseline for comparison with the test group c add additional non-dependent variables d demonstrate correlation rather than causation e generate hypotheses
- Which of the following statements BEST describes the concept of contamination in a randomized control trial? Question 6 options: The intervention group is exposed to treatments received by the control group The intervention group receives an intervention other than the intervention being implemented The control group is exposed to the treatment received by the intervention group The control group receives an intervention other than the intervention being implementedA Researcher decided to put students into groups based on their Cumulative Weighted Averages and had four different groups. He then systematically selected one student from each group and assigned some clear roles and responsibilities. Here, the researcher used ……………………..in selecting the students. In a short sentence each, explain THREE of the sampling typesWhich of the following operations could be used for hypothesistesting?a. Product rule c. Chi square testb. Binomial expansion d. All of the above