Answered: In 2015, the proportion of people with…

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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In 2015, the proportion of people with Traumatic Brain Injury was 0.0062 in the United States. Periodically rehabilitation centers must demonstrate the need for rehabilitation services in their service area to receive funding from the State of Indiana. In the last survey of 348 respondents, a local rehabilitation center found the incidence of Traumatic Brain Injury in their service region to be 0.0086. The State of Indiana wants you to be 94% confident in your analysis results.

State in statistical terms the null and alternative hypotheses.
Determine the critical value(s).
Compute the test statistic.
Make a decision about the hypotheses (which hypothesis is correct?).
Has Traumatic Brain Injury increased in the local area?

z= (p-π)/√(π(1-π)/n)

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