A team of researchers is testing the effectiveness of a new HPV vaccine. They randomly divide the subjectsinto two groups.Group 1 receives the new HPV vaccine, and Group 2 receives the existing HPV vaccine.Neither the patients or the doctors examining them knew which group they were in.Which is the treatment group?O Group 1O Group 2O Neither groupWhich is the control group (if there is one)?O Group 1O Group 2O No control groupIs this study blind, double blind, or neither?O BlindO Double-blindO Neither> Next Question31

Given info: A team of researchers testing the effectiveness of a new HPV vaccine. Group 1 receives…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study is being carried out in the operating room of the Regional Hospital of Veraguas to establish whether the type of surgery influences the appearance of nosocomial infections in obese patients who underwent a tubular gastrectomy. The 80 patients in the study are divided into two groups, one of whom had had an open surgery (44 patients) and the others a clean surgery. There were 37 patients with infection from open surgery and 14 with infection from clean surgery. If you did not have a nosocomial infection, what is the probability that you had clean surgery? What is the probability that a patient will have clean surgery? What is the probability that a patient will have open surgery? What is the probability of clean surgery or nosocomial infection? What is the probability of no nosocomial infection or clean surgery? If you had clean surgery, what is the probability of a nosocomial infection? If you had clean surgery, what is the probability of no nosocomial infection? If you had…
Dr. Jarry applies for a research grant to examine whether electrolyte-enriched water affects athletic performance. They propose enrolling 50 college distance runners who will consume 28 ounces of water or 28 ounces of an electrolyte-enriched solution 30 minutes before running a timed 5000 meter race. Dr. Jarry states that runners will be randomly assigned to the control group (distilled water) or the treatment group (electrolyte- enriched water). Both the electrolyte solution and the distilled water will be provided to the runners in unlabeled opaque bottles. The electrolyte solution is identical in appearance and taste to distilled water. Unfortunately, the funding agency rejects the proposal due to inadequate blinding procedures. Which of the following might have been a reason for the funding agency to reject the proposal? It is not clear whether the researcher is blinded It is not clear whether the subjects are blinded It is not clear whether either the researcher or the subjects…
I need help with the final question.
The contingency table below shows the blood types of a sample of patients cross classified by gender. How many women with blood type AB would you expect if there was no association between these two variables? A AB Total Female 42 55 11 4 112 Male Total 55 43 16 120 97 98 27 10 232 O 5.2 O 10 O 4.8 4.
4. A graduate student in Health and Human Performance is interested in the effects of background noise on learning. He finds 18 undergraduate students who are willing to be part of the experiment. Well, the $100 Amazon gift card made it easy to find participants quickly. In any case, the students were randomly assigned to one of three treatments: 1) constant background noise; 2) random background noise; and 3) no background noise. The students were given material to study for one hour under these conditions. After that one hour, each student took a 20-point multiple-choice test. The scores for each student were as follows: constant noise: 16,17,14,15,16,13 random noise: 18,13,12,15,12,11 no noise: 20,19,18,16,15,17 a) What are the null and alternative hypotheses for this study? What statistical test should be used for this study? Justify your answer. b) Calculate your appropriate test statistic. Please show all of your work. c) Assume that the graduate set α to 0.05 during the…
AD (Alzheimer's disease) causes progressive cognitive impairment. A diagnostic blood test for AD was proposed. An evaluation of the blood text involved fifty known AD patients and forty control who did not have AD. Of those who had AD, forty eight tested positive on the blood test and two tested negative. Of those without AD, three tested positive on the blood test and thirty seven tested negative. c. How many people who did have AD tested negative on the blood test? What is the name for this kind of test result?
A company wants to study the effects a new drug has on alleviating pain. Some patients at doctor’s office are selected to be in the study. The patients will be randomly assigned to take the new drug or the old drug. They will be monitored to see when the pain goes away. The group getting the old drug is called what? A. Experiemental Group B. Control Group C. Dependent Group D. Independent Group
2. A research firm tests the miles per gallon characteristics of three brands of gasoline. Because of different gasoline performance characteristics in different brands of automobiles, five brands of automobiles are selected and treated as blocks in the experiment; that is, each brand of automobile is tested with each type of gasoline. The results of the experiment (in miles per gallon) is given in Table 2. Table 2 Gasoline Brands Automobiles I II III A B D E a. How many factors and treatments involved in the study? State the factors and list all the possible treatments b. State the independent and dependent variables c. You are required to randomly generate data to fill up Table 2 using random number generator in Microsoft Excel. Please follow the following requirements: i. The data value should be within the range (18, 34). 11. The number of data for each treatment must be the same. (at least two data for each treatment) d. Based on your answer in (c), is there any interaction effect…
2 A researcher recruits 80 students for a study. Half of the students attend a review session for an exam. The remaining students study as they normally would for the exam. After the exam, the researcher compares the scores of the two groups. Identify the control group. A: All the students in the study B: The students who attend the review session C: All the students who take the exam D: The students who study as they normally would
A team of researchers is testing the effectiveness of a new HPV vaccine. They randomly divide the subjects into two groups.Group 1 receives no vaccine, and Group 2 receives the new HPV vaccine.The patients in the study do not know which group they are in.Which is the treatment group? Group 1 Group 2 Neither group Which is the control group (if there is one)? Group 1 Group 2 No control group Is this study blind, double blind, or neither? Blind Double-blind Neither Which best describes this research? Survey Observational Study Experiment
A doctor wanted to study the effect of four different treatments on mental health. A group of 100 adults experiencing depression volunteered for the study. The doctor randomly assigned one-fourth of them to each of four groups. Group 1 followed a specific exercise plan, group 2 followed a specific diet plan, group 3 followed an exercise and diet plan, and group 4 did not follow any plan. After 4 weeks, the doctor contacted each participant and asked them if they felt any better. The results are displayed in the table. The doctor would like to know if these data provide convincing evidence that the distribution of responses differs across the treatment groups in the population of all patients like these. The random condition is met. The 10% condition is not needed because random sampling did not take place. This table of expected counts shows that all expected counts are at least 5. What is the value of the chi-square test statistic? χ‑2 = 5.03 χ‑2 = 6.26 χ‑2 = 25.33 χ‑2 = 39.22

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