1.2 Sinusitis and antibiotics: Researchers studying the effect of antibiotic treatment for acute sinusitiscompared to symptomatic treatments randomly assigned 162 adults diagnosed with acute sinusitis to one oftwo groups: treatment or control. Study participants received either a 10-day course of amoxicillin (anantibiotic) or a placebo similar in appearance and taste. The placebo consisted of symptomatic treatmentssuch as acetaminophen, nasal decongestants, etc. At the end of the 10-day period patients were asked ifthey experienced significant improvement in symptoms. The distribution of responses is summarized below.(please round answers to within one hundredth of a percent)Significant improvement: Yes Significant improvement: NoTreatmentControlTotal6555120241842Total8973162a) What percent of patients in the treatment group experienced a significant improvement in symptoms?73.03%b) What percent of patients in the control group experienced a significant improvement in symptoms?75.34%c) Based on your finding in the previous two parts, which treatment appears to be more effective forsinusitis? Explain your reasoning.Symptomatic treatment, because a higher percentage of individuals in the control group experiencedsignificant improvement.O Antibiotic treatment, because this is a real treatment while symptomatic treatment is just aplacebo.O Antibiotic treatment, because more individuals in the treatment group experienced significantimprovement.O Symptomatic treatment, because fewer people in the control group report that there is nosignificant improvement.d) Do the data provide convincing evidence that there is a real difference in the improvement rates ofsinuitis symptoms? Or do you think that the observed difference might just be due to chance?Yes, the percentage of patients in the treatment group who experienced significant improvementafter treatment was much greater than the corresponding percentage of patients in the controlgroup.O It is impossible to tell merely by comparing the sample proportions because the difference could bethe result of random error in our sample.

Answered: Image /qna-images/answer/3ce8d501-f43a-40f1-a08a-b472305437a1.jpg

Answered: 1.2 Sinusitis and antibiotics:…

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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The following results are from an independent-measures, two-factor study with n = 5 participants in each treatment condition. Use a two-factor ANOVA with α = .05 to evaluate the main effects and the interaction. Include a source table for your ANOVA.
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The data below are from an independent-measures experiment comparing three different treatment conditions. Use an ANOVA with a = .05 to determine whether these data indicate any significant differences among the treatments Treatment 1 Treatment 2 Treatment 3 0 1 4 N = 12 0 4 3 G = 24 0 1 6 åX2 = 92 2 0 3 M = 0.5 T = 2 M = 1.5 T = 6 M = 4 T = 16 SS = 3 SS = 9 SS = 6
A two-factor study with three levels of factor A (i.e., independent variable #1) and 3 levels of Factor B (i.e., independent variable # 2) uses a separate group of n = 5 participants in each treatment condition. How many conditions are there in the study?
An investigation is performed to evaluate two new experimental treatments for allergies. 18 subjects who suffer from allergies are enrolled in the study and randomly assigned to one of three treatments: Control Group, Experimental Treatment 1, or Experimental Treatment 2. Each subject is instructed to take the assigned treatment, and symptoms of allergies are recorded on a scale of 1 to 20, with higher scores indicating worse symptoms. The data is summarized in the table below: SBP Std. Deviation Group Mean Control Treatment 6. 16.17 2.483 Experimental Treatment 1 6. 11.33 1.966 Experimental Treatment 6. 3.83 1.472 Total 18 10.44 5.554 Use this data to complete an ANOVA table to test for a significant difference in the means of each of the groups. Round all answers to the third decimal point.
In a certain study, the effect on oat yield was compared for the Pallinup, Overberg and Magnifico varieties of oats and four different concentrations of manure (0, 0.2, 0.4 and 0.6 tonnes per acre). Identify the experimental units, response variable, factor(s), levels of each factor and treatments.
Most cases of cervical cancer are linked to a few strains of the human papilloma virus (HPV). The pharmaceutical company Merck developed a vaccine (Gardisil) against these HPV strains. Worldwide clinical trials followed young women after vaccination or administration of placebo for two to four years for signs of HPV-caused cervical cancer. Based on a sample of 100 women in the Gardisil group, 24 % developed cervical cancer, and based on a sample of 100 women in the placebo group, 34 % developed cervical cancer. Test the claim that the proportion of women who developed cervical cancer in the Gardisil group is less than the proportion of women who developed cervical cancer in the placebo group at a = 0.10. Round your answers to three decimal places, and round any interim calculations to four decimal places. Fill in the hypotheses below where p₁ denotes the proportion of women who developed cervical cancer in the Gardisil group and P2 denotes the proportion of women who developed cervical…
State the hypotheses for each of the three separate tests included in the two-factor ANOVA.

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