What is the purpose for post tests? Question 19 options: To determine whether or not a Type I error was committed To determine how much difference exists between the treatments To determine which treatments are significantly different None of the above
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![What is the purpose for post tests?
Question 19 options:
To determine whether or not a Type I error was committed
To determine how much difference exists between the treatments
To determine which treatments are significantly different
None of the above](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3e131e99-b263-483b-8c01-833d5b0a2688%2F53b859b0-54d7-4163-aadb-de2b7ac4e94a%2F6ezzlq_processed.jpeg&w=3840&q=75)
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- What is the purpose for post (post hoc) tests? a. To determine whether or not a Type I error was committed b. To determine how much difference exists between the treatments c. To determine which treatments are significantly different d. None of theseTwo groups of women are screened for human papillomavirus (HPV) infections of the uterine cervix. The true prevalence of HPV infection is 0.10 in the first group and 0.20 in the second group. Which of the following measures of test characteristics will differ between the two groups? A. False negative ratio B. False positive ratio C. Predictive value of a negative D. Sensitivity of the screening test E. Specificity of the screening testA variable that is related to either the response variable or the predictor variable or both, but which is excluded from the analysis is a, Select one: a. quality variable. b. lurking variable. c. random variable. d. discrete variable.
- A group of disabled women ages 65 and older were followed for several years. It was found that those who had a vitamin B12 deficiency were twice as likely to suffer from severe depressions than those who did not.a. Describe the type of study being performed.b. Describe the explanatory variable(s) and response variable(s).Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made in a given time period and found that 10% of all lenses had defects of some type. Looking at the type of defects, they found in a three-month time period that out of 34,024 defective lenses, 5840 were due to scratches. Are there more defects from scratches than from all other causes? State the Type I and Type II errors in this case.State the Type I error. Concluding that the proportion of defects from scratches is 10%, when in reality it is less than 10%. Concluding that the proportion of defects from scratches is 10%, when in reality it is higher than 10%. Concluding that the proportion of defects from scratches is less than 10%, when the proportion is actually 10%. Concluding that the proportion of defects from scratches is higher than 10%, when the proportion is actually 10%. State the Type II error. Concluding that the proportion of defects from scratches is…here is the needed information for the question Diagnosis of appendicitis: Ultrasound can be used to identify cases of appendicitis. In a study of the use of the tech- nique [2], researchers were able to identify an overall sensitivity of 82% and a specificity of 54% of ultrasound testing across several clinics. This was amongst patients who fronted with abdominal pain, 72% who were later diagnosed with appendicitis through separate testing.
- Answer the given problem. Use the steps in hypothesis testing when presenting the results. A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat diet and high exercise regimen. He selected 15 moderately overweight subjects and randomly assigned 5 to each weight-loss program. The following weight reductions (in lbs) were observed after a one-month period. Test the hypothesis that the extent of weight reduction does not differ by type of weight-loss program. Low Fat : 7 7 5 4 6 Low Calorie : 7 8 8 5 High Exercise Regimen: 7 9 7 9 8 8If you were assigned to develop an experiment to determine if adding specific insecticides will kill a specific type of insect on tomatoes, and you were using a hypothesis statement, you would be using what type of research? Select one. O Qualitative O Quantitativemake it so i could copy and paste it
- The Ministry of Health is interested in determining patients’ response time to a new influenza cure based on the length of time (in hours) they were ill before receiving any of the two drugs. The results of the trial are given in the table(image file) below: A. Please conduct the appropriate statistical analyses to compare the response time for the two drugs while controlling for length of time they were ill. Clearly outline all your tests. B. What is the conclusion? C. Has the assumptions of normality and homogeneity of variance been met?The Ministry of Health is interested in determining patients’ response time to a new influenza cure based on the length of time (in hours) they were ill before receiving any of the two drugs. The results of the trial are given in the table(image file) below: A. Please conduct the appropriate statistical analyses to compare the response time for the two drugs while controlling for length of time they were ill. Clearly outline all your tests. B. What is the conclusion? C. Has the assumptions of normality and homogeneity of variance been met? D. The JASP output and input of all the statistical analyses performedI need the answer within 30 mins statistical epidemiology
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