In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests." Thearticle says that the overall statewide proportion of school buses that fail safety tests is 9%.However, one bus company has a higher rate of over 12%. Assume that we want a new estimate forthe statewide proportion of school buses that fail the safety inspection. We take a sample of 200buses and find that 20 buses fail the safety inspection.If we construct a 95% confidence interval estimate for the true proportion of all Minnesota schoolbuses that fail the safety tests, what is the upper limit of the interval? (Enter you answer including 3decimal positions, e.g. .234)

here given, n = 200 sample proportion =20200 = 0.1 here for z-critical use excel command…

Answered: If we construct a 95% confidence…

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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If we construct a 95% confidence interval estimate for the true proportion of all Minnesota school buses that fail the safety tests, what is the upper limit of the interval? (Enter you answer including 3 decimal positions, e.g. .234)