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Assume that you work for the Food and Drug Administration. A pharmaceutical company has applied for approval to market a new arthritis medication. The research involved a test group that was given the medication and another test group that was given a placebo.
Respond to the following:
• Describe some ways in which the test groups might not be representative of the population of people with arthritis.
• If the company itself paid for or conducted its own research, would you have any concerns? Why or why not?
• If the study was not conducted as a blind or a double-blind test would you have any concerns? Why or why not?
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Out of 1000 respondents to a survey, 250 people planned to purchase a TV of which 200 actually purchased and 50 did not actually purchase. 750 people did not plan to purchase at TV, of which 100 actually purchased and 650 did not actually purchase.
Specify the appropriate null and alternative hypotheses if we wish to test the research hypothesis that the mean GHQ score for all employed men exceeds 10.
Create a flow diagram for entire process. Include flow paths for students (solid lines) and prescriptions (dashed lines).
a sociologist found that in a sample of 50 retired men the average number of jobs they had during their lifetimes was
the rapid test is used to determine whether someone has hiv the virus that causes aids. the false-positive and
use this information about the overhead reach distances of adult females mean 205.5 cm sd 8.6 cm and over head reach
Among the variables high school percentile, ACT English score, ACT math score, and ACT composite score, identify the one that appears to be the best predictor of cumulative GPA. Explain your reasoning.
Researcher has 100 test subjects to split into his treatment and control groups. In order to prove any causal relationship between treatment and outcome, he should:
The F test is used in Analysis of Variance (ANOVA). When would a researcher use an ANOVA? Explain (one paragraph in length).
A television station estimates that 50% of college students watch the super bowl. For a sample of 120 students selected at random, what is the mean and variance of the number of students who watch the game?
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