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1. Consider the circumstances under which a repeated-measures experimental research design, rather than a between-participants experimental design, might be more or less appropriate.
2. Explain what counterbalancing refers to and which potential problems it can and cannot solve.
3. Why is it important in experimental designs to examine both the condition means and the ANOVA summary table?
Clyde's Chairs and Things sells custom made chairs. Yearly sales from 1983 to 2011 are provided below. After analyzing the information, answer the following questions as completely as possible:
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired.
In a random sample of 300 persons eating lunch at a department store cafeteria, only 102 had dessert. If we use 102/300 = 0.34 as an estimate of the corresponding true proportion, with what confidence can we assert that our error is less than 0.05..
Post-hoc fallacy is that condition where regression shows a high degree of correlation (R square is high), but there is no real cause-effect relationship between the independent and dependent variables.
Formulate both a numerical and verbal hypothesis statement regarding your research issue. Perform the five-step hypothesis test on data pertaining to your selection.
a box contains 18 working transistor and 7 defective transistors. you select 5 transistors from this box and solder
A biologist has found that the average weight of 12 randomly selected adult mud turtles is 8.7 lb. with standard deviation 3.6 lbs. Construct a 99% confidence interval for the population mean weight of adult mud turtles.
Final scores averaged 66 for the treatment group; the SD was 21. For the control group, the figures were 59 and 20. What do you conclude?
a researcher conducted an experiment on the effects of a new multivitamin on energy level with a control group received
What are the differences between traditional and derivative instruments? Why do companies use derivative instruments? Are derivatives a good investment? Explain why or why not.
1. An observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r = 0.35. The study involves n=125 participants and the mean (std dev) age is 44.3 (10.0) years w..
Determine the sample proportion of P&G workers who participate in 401(k) accounts. Determine the sampling error if in reality P&G workers have the same proportion of participants in 401(k) accounts as does the rest of the nation.
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