study of the accuracy a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.161
study of the accuracy a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.161
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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![In a study of the accuracy of fast food drive-through orders, Restaurant A had 335 accurate orders and 73 that were not accurate.
a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate.
b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.161 <p < 0.222. What do you conclude?
a. Construct a 90% confidence interval. Express the percentages in decimal form.
<p<
(Round to three decimal places as needed.)
b. Choose the correct answer below.
O A. No conclusion can be made because not enough information is given about the confidence interval for Restaurant B.
O B. The lower confidence limit of the interval for Restaurant B is higher than the lower confidence limit of the interval for Restaurant A and the upper confidence limit of the interval for Restaurant B is
also higher than the upper confidence limit of the interval for Restaurant A. Therefore, Restaurant B has a significantly higher percentage of orders that are not accurate.
O C. Since the two confidence intervals overlap, neither restaurant appears to have a significantly different percentage of orders that are not accurate.
O D. Since the upper confidence limit of the interval for Restaurant B is higher than both the lower and upper confidence limits of the interval for Restaurant A, this indicates that Restaurant B has a
significantly higher percentage of orders that are not accurate.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F75dae615-689e-4398-9c82-2dfb5974be65%2F665109d6-427f-4c46-9f18-e99e8bd5fc4e%2Fmafpd4_processed.png&w=3840&q=75)
Transcribed Image Text:In a study of the accuracy of fast food drive-through orders, Restaurant A had 335 accurate orders and 73 that were not accurate.
a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate.
b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.161 <p < 0.222. What do you conclude?
a. Construct a 90% confidence interval. Express the percentages in decimal form.
<p<
(Round to three decimal places as needed.)
b. Choose the correct answer below.
O A. No conclusion can be made because not enough information is given about the confidence interval for Restaurant B.
O B. The lower confidence limit of the interval for Restaurant B is higher than the lower confidence limit of the interval for Restaurant A and the upper confidence limit of the interval for Restaurant B is
also higher than the upper confidence limit of the interval for Restaurant A. Therefore, Restaurant B has a significantly higher percentage of orders that are not accurate.
O C. Since the two confidence intervals overlap, neither restaurant appears to have a significantly different percentage of orders that are not accurate.
O D. Since the upper confidence limit of the interval for Restaurant B is higher than both the lower and upper confidence limits of the interval for Restaurant A, this indicates that Restaurant B has a
significantly higher percentage of orders that are not accurate.
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