Answered: A research team is hired to investigate…

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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Question

A research team is hired to investigate the prevalence of periodontal disease in a rural county
with a low average socio-economic status. The team is given the task of surveying the area, and
providing a brief examination of participants to correctly identify cases of periodontal disease
and estimate an overall prevalence. If the team identifies an overall prevalence of above 25%, the
sponsoring organization is to initiate an active campaign promoting healthy dental practice. Out
of 2,879 participants surveyed, 589 were identified to have periodontal disease.

A) Conduct a formal test for detecting if the prevalence of periodontal disease in the sample is
significantly different from the minimum prevalence for intervention. Use an alpha level of 0.01.
B) Interpret your conclusions.

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