1 Two groups of patients, suffering from the same medical condition, took part in a clinicaltrial of a new drug. One of the groups was given the drug whilst the other group was givena placebo, a drug that has no physical effect on their medical condition.The table shows the number of patients in each group and whether or not their conditionimproved.Condition improvedCondition did not improvePlacebo2055Drug4629Conduct a x² test, at the 5% level of significance, to determine whether the condition of thepatients at the conclusion of the trial is associated with the treatment that they were given.

Given data: Placebo Drug Condition improved 20 46 Condition did not improve 55 29

Answered: 1 Two groups of patients, suffering…

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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Q1: Placebo effect of exercise In a high-profile research study, Crum and Langer (2007) performed an experiment to test whether the relationship between physical exercise and health is impacted by one's mindset: in other words, if there is any "placebo effect" of exercise. A sample of 84 randomly selected hotel workers in the United States were placed either into a treatment group (n=44) or control group (n=40) depending on which hotel they worked at. The treatment group was given information demonstrating how their work is good physical exercise, while the control group was not given this information. They measured the body mass index (BMI) for each worker before the experiment and again four weeks after the experiment. a. Are the treatment group and control group independent of each other, and if so why? b. Now consider the treatment group alone: are the measurements of BMI taken before and after the experiment independent of each other, and if so why? c. What is the most appropriate…
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