14. In an experiment of exercise and health, the pretest and posttest scores for thecontrol group are 55% and 54%, and the pretest and posttest scores for theexperimental group are 53% and 61%. Therefore, the effect of exercise is:6%8%O 11%9%7%10%

The effect of the exercise is the change in the value due to exercise. The change can be calculated…

Answered: 14. In an experiment of exercise and…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A researcher is interested in investigating the relationship between sugar consumption and weight gain for high school students. 15 volunteers were randomly assigned to one of two groups. The first group contained 6 volunteers who were put on a low sugar diet. The second group consisting of the remaining 9 volunteers was put on a diet with sugar constituting approximately 15% of their diet. After 8 weeks, the change in weight was recorded for each of the volunteers. Question: What is the response variable? What study principle was used in this study and what kind of study is this?
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Find A= %b= %c= %d= %
1.2 Sinusitis and antibiotics, Part I. Researchers studying the effect of antibiotic treatment for acute sinusitis compared to symptomatic treatments randomly assigned 166 adults diagnosed with acute sinusitis to one of two groups: treatment or control. Study participants received either a 10-day course of amoxicillin (an antibiotic) or a placebo similar in appearance and taste. The placebo consisted of symptomatic treatments such as acetaminophen, nasal decongestants, etc. At the end of the 10-day period, patients were asked if they experienced improvement in symptoms. The distribution of responses is summarized below.³ Group Treatment Control Total Self-reported improvement in symptoms Yes 66 65 131 No 19 16 35 Total 85 81 166 (a) What percent of patients in the treatment group experienced improvement in symptoms? (b) What percent experienced improvement in symptoms in the control group? (c) In which group did a higher percentage of patients experience improvement in symptoms? (d)…
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14. In an experiment of exercise and health, the pretest and posttest scores for the control group are 55% and 54%, and the pretest and posttest scores for the experimental group are 53% and 61%. Therefore, the effect of exercise is: 6% 8% O 11% 9%