In randomized, double-blind clinical trials of a new vaccine, toddlers were randomly divided into two groups. Subjects in group 1received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 121 of 379 subjects in theexperimental group (group 1) experienced nausea as a side effect. After the second dose, 150 of 595 of the subjects in thecontrol group (group 2) experienced nausea as a side effect. Does the evidence suggest that a higher proportion of subjects ingroup 1 experienced nausea as a side effect than subjects in group 2 at the α = 0.10 level of significance? In randomized, double-blind clinical trials of a new vaccine, toddlers were randomly divided into two groups. Subjects in group 1received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 121 of 379 subjects in theexperimental group (group 1) experienced nausea as a side effect. After the second dose, 150 of 595 of the subjects in thecontrol group (group 2) experienced nausea as a side effect. Does the evidence suggest that a higher proportion of subjects ingroup 1 experienced nausea as a side effect than subjects in group 2 at the α = 0.10 level of significance?

The question is about hypo. testing for difference between two popl. prop. Given : Total no. of…

Answered: In randomized, double-blind clinical…

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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Researchers investigate how the presence of cell phones influence the quality of human interaction. Subjects are randomly selected from a population and divided into an experimental group that is asked to leave their phones in the front of the room and a control group that are not asked to leave their cell phones at the front of the room. Subjects are left alone for 10 minutes and then asked to take a survey designed to measure quality of interactions they had with others in the experiment. What statistical test is appropriate?
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A clinical trial is conducted to compare an experimental medication to placebo to reduce the symptoms of asthma. Two hundred participants are enrolled in the study and randomized to receive either the experimental medication or placebo. The primary outcome is self-reported reduction of symptoms. Among 100 participants who receive the experimental medication, 38 report a reduction of symptoms as compared to 21 participants of 100 assigned to placebo. When you test if there is a significant difference in the proportions of participants reporting a reduction of symptoms between the experimental and placebo groups. Use α = 0.05. What should the researcher’s conclusion be for a 5% significance level? Reject H0because 2.64 ≥ 1.960. We have statistically significant evidence at α = 0.05 to show that there is a difference in the proportions of patients reporting a reduction in symptoms. We reject H0 at the 5% level because 2.64 is greater than 1.96. We do have statistically…
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