Answered: In a study of the accuracy of fast…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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In a study of the accuracy of fast food drive-through orders, Restaurant A had 334 accurate orders and 67 that were not accurate.

a. Construct a 95% confidence interval estimate of the percentage of orders that are not accurate.

b. Compare the results from part (a) to this95%
confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.155<p<0.219. What do you conclude?

a. Construct a 95%
confidence interval. Express the percentages in decimal form.

?<p<?

In a study of the accuracy of fast food drive-through orders, Restaurant A had 334 accurate orders and 67 that were not accurate.

**a.** Construct a 95% confidence interval estimate of the percentage of orders that are not accurate.

**b.** Compare the results from part (a) to this 95% confidence interval for the percentage of orders that are not accurate at Restaurant B: $0.155 < p < 0.219$. What do you conclude?

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**a.** Construct a 95% confidence interval. Express the percentages in decimal form.

\[
\boxed{\ \ } < p < \boxed{\ \ } \ \text{(Round to three decimal places as needed.)}
\]

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