Lecture 7 - HW Template

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BIO 116

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Apr 3, 2024

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PHCO-0504J-033 Rutgers University Lecture 7 – HomeWork (6) School of Public Health REMINDER: School of Public Health Honor Code : The School of Public Health Honor Code is found in the School Catalog ( sph.rutgers.edu/academics/catalog.html ). Each student bears a fundamental responsibility for maintaining academic integrity and intellectual honesty in his or her graduate work. For example, all students are expected to observe the generally accepted principles of scholarly work, to submit their own rather than another’s work, to refrain from falsifying data, and to refrain from receiving and/or giving aid on examinations or other assigned work requiring independent effort. In submitting written material, the writer takes full responsibility for the work as a whole and implies that, except as properly noted by use of quotation marks, footnotes, etc., both the ideas and the works used are his or her own. In addition to maintaining personal academic integrity, each student is expected to contribute to the academic integrity of the School community by not facilitating inappropriate use of her/his own work by others and by reporting acts of academic dishonesty by others to an appropriate school authority. It should be clearly understood that plagiarism, cheating, or other forms of academic dishonesty will not be tolerated and can lead to sanctions up to and including separation from the Rutgers School of Public Health. Lateness. Assignments turned in after the official collection period are considered late. Unless the instructor and student come to an arrangement at least one week before class, there is an 10% point penalty for written work turned in late. Assignments are posted to Canvas by the due date. If you need to turn in something after the date due, please discuss it with the instructor to avoid point penalty. Grammar/Spelling. If there are gross punctuation, grammar or spelling errors occur in the written assignments, they will be returned with no grade. These can be resubmitted within one week with a 5% point penalty or the student can accept a failing grade. Citations. Preferred citation style for references in written assignments will be American Psychological Association (APA). Please use this APA citation style for electronic references. Margins and Page Limits Requirements. Please use the HW templates. A deduction of 10% will occur if assignments are disorganized or over the maximum page limit. Instructions available on Canvas. 1

PHCO-0504J-033 Rutgers University Lecture 7 – HomeWork (6) School of Public Health Name: QUESTION 1: To compare health ratings from 3 insurance providers with data on 15 individuals per provider, I would perform an F test with ______ and ______ degrees of freedom. [0.2 points; 0.1 for correct answer to each blank] QUESTION 2: For comparing health ratings from 3 insurance providers with data on 7 individuals per provider, SSB=100 and SSW = 40. The F statistic is ________. The critical value at alpha = 0.05 is ___________ [0.2 points; 0.1 for correct answer to each blank] QUESTION 3: Which of the following is an assumption of one-way ANOVA comparing the population means of bilirubin (measured in mg/dL units) in normal, overweight, and obese individuals? [0.25 points] A. Bilirubin in normal, overweight, and obese populations follow normal distributions. B. The samples of normal, overweight, and obese individuals in the study are randomly selected from the population and are independent of each other. C. Bilirubin in normal, overweight, and obese populations have equal variances. D. All of the above. YOUR ANSWER: ________ QUESTION 4: When comparing the population means of bilirubin in normal, overweight, and obese individuals with 15 people per group, suppose the value of the F statistic from an ANVOA is 18.574 and the critical value from a F distribution is 3.22. Then (choose the correct statement from among the choices given below): [0.25 points] A. Do not reject H0: the population means of bilirubin are the same in normal, overweight, and obese individuals. B. The type I error is given by the area to the left of 3.22 under the appropriate F distribution when H0 is true. C. The type I error is given by the area to the right of 3.22 under the appropriate F distribution when H0 is true. D. None of the above. YOUR ANSWER: _________ QUESTION 5: Remdesivir, an investigational intravenous drug that inhibits viral replication, is being examined as a possible treatment for Covid-19. A team of healthcare workers are planning a clinical trial to compare 2

PHCO-0504J-033 Rutgers University Lecture 7 – HomeWork (6) School of Public Health improvement in lung function following treatment with 5-days of remdesivir versus 10-days of remdesivir versus standard-of-care. The team plans to recruit 30 male and 30 female Covid-19 patients into this trial. The team needs to prepare a short paragraph about study design and analysis plan for inclusion in their protocol. Help this team plan their trial by writing the following [1 points total: 0.2 points for each part] :  Recommend a study design.  State the response outcome of interest and how to measure it.  State the statistical approach you recommend for comparing the outcome across all treatment groups. Also state what statistical approach to use to identify the treatment that offers the best improvement in lung function (if such a treatment exists among those considered).  State what assumptions are required to do this test.  State what can be done when the assumptions fail. QUESTION 6: In a study of Carpal Tunnel Syndrome (CTS) grocery store workers were classified according to whether they had “low, medium, or high” (Exposure levels 1, 2, and 3, respectively) risk for CTS based on the amount of repetitive tasks using muscles in the hand and wrist that were required by their job description. Each worker in the study was assessed via the “sensory median nerve conduction velocity of the wrist (M/sec)”, a continuous measurement which is one method of diagnosis for CTS. Using the SPSS output given below, perform a Hypothesis Test to examine whether, on average, workers in the three exposure levels differ according to their sensory median nerve conduction velocity of the wrist. Clearly state [1 point – 0.2 points per part] : 3

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