Table 2: Test ResultsDiabeticNot DiabeticPositive to urine test, negative to blood73Positive to blood test, negative to urine2311Positive to both tests457Negative to both tests1247,620ТОTAL1997,641a. How do the sensitivity or specificity of each combination of the tests changewhen compared with single test?b. assuming you are the harried director of the diabetes screening program, whichtest or combination of tests would you prefer to use?

Given information: Test Results Diabetic Not Diabetic Positive urine test, Negative to blood 7…

Answered: Table 2: Test Results Diabetic Not…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 31E

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3. A researcher was interested in the effects of a drug on depression. Subjects were randomly assigned to one of the three groups. Subjects in the control group received a placebo and the subjects in the two treatment groups received either a 0.2 mg or a 0.4 mg dosage of the drug. After several weeks of drug (or placebo) treatment, the researcher measured the subjects' level of depression (a low score indicating greater depression) The following data were obtained. Placebo 0.2 mg 0.4 mg 12 11 12 10 9. 14 11 11 17 13 13 16 15 7 16 12 Mean of X = 10 14 12 S^2 = 5.6 8.4 Using 5% of significance, test the hypothesis that the three groups differ in their effectiveness.
Suppose there is a study of the effects of sleep deprivation on memory. Thirty individuals are taken to a sleep laboratory and randomly placed in one of the following three groups: one which is allowed to sleep for 8 hours, another group allowed to sleep only 4 hours, and a third group which is not allowed to sleep the entire night. The next morning their performance on a memory test is measured. The independent variable is:
The director of student services at Oxnard College is interested in whether women are less likely to attend orientation than men before they begin their coursework. A random sample of freshmen at Oxnard College were asked what their gender is and whether they attended orientation. The results of the survey are shown below: Data for Gender vs. Orientation Attendance Women Men Yes 419 No 223 | 437 189 What can be concluded at the a = 0.01 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer v Select an answer v Select an answer v (please enter a decimal and note that p1 and ul represent the proportion and mean for women and p2 and µ2 represent the proportion and mean for men.) H: Select an answer v Select an answer Select an answer (Please enter a decimal) b. The test statistic ? v (please show your answer to 3 decimal places.) c. The p-value = d. The p-value is ? va e. Based on this, we should Select…
In 1998, there was a major ice storm in Maine. Researchers wanted to know whether there was an association between generator location (inside or outside) and CO poisoning after an ice storm. Results from their case-control study are summarized in the table below (cases are observations that have experienced the CO poisoning, controls are observations that have not experienced the CO poisoning): What type of table is this? Name at least 2 tests you can perform to investigate the association between generator location and CO poisoning after an ice storm. Calculate the odds ratio and risk ratio based on this table. Which one is more appropriate for this type of study design?

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