The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval that results from examining 648 customers in Taco Bell's drive-through has a lower bound of 172.0 seconds and an upper bound of 176.4 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 648 customers? The mean service time from the 648 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin I error for the confidence interval? The margin of error is seconds. (Type an integer or a decimal. Do not round.) (c) Interpret the confidence interval. Select the correct choice below and fill in the answer boxes complete your choice. (Type integers or decimals. Do not round.) O A. There is a % probability that the mean drive-through service time of Taco Bell is between seconds and seconds. O B. The mean drive-through service time of Taco Bell is seconds % of the time. O C. One can be % confident that the mean drive-through service time of Taco Bell is seconds O D. One can be % confident that the mean drive-through service time of Taco Bell is between seconds and seconds.
The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval that results from examining 648 customers in Taco Bell's drive-through has a lower bound of 172.0 seconds and an upper bound of 176.4 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 648 customers? The mean service time from the 648 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin I error for the confidence interval? The margin of error is seconds. (Type an integer or a decimal. Do not round.) (c) Interpret the confidence interval. Select the correct choice below and fill in the answer boxes complete your choice. (Type integers or decimals. Do not round.) O A. There is a % probability that the mean drive-through service time of Taco Bell is between seconds and seconds. O B. The mean drive-through service time of Taco Bell is seconds % of the time. O C. One can be % confident that the mean drive-through service time of Taco Bell is seconds O D. One can be % confident that the mean drive-through service time of Taco Bell is between seconds and seconds.
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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Transcribed Image Text:The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval that results from examining 648 customers in Taco Bell's drive-through has a lower bound of 172.0 seconds and an
upper bound of 176.4 seconds. Complete parts (a) through (c).
(a) What is the mean service time from the 648 customers?
The mean service time from the 648 customers is
seconds
(Type an integer or a decimal. Do not round.)
(b) What is the margin of error for the confidence interval?
The margin of error is
seconds.
(Type an integer or a decimal. Do not round.)
(c) Interpret the confidence interval.
Select the correct choice below and fill in the answer boxes to complete your choice.
(Type integers or decimals. Do not round.)
O A. There is a
% probability that the mean drive-through service time of Taco Bell is between
seconds and
seconds.
O B. The mean drive-through service time of Taco Bell is
seconds
% of the time.
seconds.
O C. One can be
% confident that the mean drive-through service time of Taco Bell is
seconds and
seconds.
O D. One can be
% confident that the mean drive-through service time of Taco Bell is between
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