Answered: 7.) In a study of the accuracy of fast…

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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7.) In a study of the accuracy of fast food drive through orders, based on data from QSR Magazine,
Burger King had 264 accurate orders and 54 orders than were not accurate.
a.) Construct a 99% confidence interval estimate of the proportion of orders that were not accurate.
b.) A similar study of orders at Wendy’s led to a 99% confidence interval estimate of the proportion of
orders that were not accurate of: 6.2% < p < 15.9%
Comparing that interval with the interval that you constructed, could you definitively conclude that one
restaurant has a significantly better rate of accuracy of orders than the other? Why or why not?

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