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The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 90% confidence interval that results from examining 627 customers in Taco Bell's drive-through has a lower bound of 161.2 seconds and an upper bound of 167.0 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 627 customers? The mean service time from the 627 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin of error for the confidence interval? 4 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.) OA. The mean drive-through service time of Taco Bell is OB. One can be OC. One can be D. There is a seconds % of the time. % confident that the mean drive-through service time of Taco Bell is % confident that the mean drive-through service time of Taco Bell is between seconds and % probability that the mean drive-through service time of Taco Bell is between seconds and seconds. seconds, seconds

The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 90% confidence interval that results from examining 627 customers in Taco Bell's drive-through has a lower bound of 161.2 seconds and an upper bound of 167.0 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 627 customers? The mean service time from the 627 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin of error for the confidence interval? 4 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.) OA. The mean drive-through service time of Taco Bell is OB. One can be OC. One can be D. There is a seconds % of the time. % confident that the mean drive-through service time of Taco Bell is % confident that the mean drive-through service time of Taco Bell is between seconds and % probability that the mean drive-through service time of Taco Bell is between seconds and seconds. seconds, seconds

MATLAB: An Introduction with Applications
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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The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 90% confidence interval that results from examining 627 customers in Taco Bell's drive-through has a lower bound of 161.2 seconds and an upper bound of 167.0 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 627 customers? The mean service time from the 627 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin of error for the confidence interval? 4 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.) OA. The mean drive-through service time of Taco Bell is OB. One can be OC. One can be D. There is a seconds % of the time. % confident that the mean drive-through service time of Taco Bell is % confident that the mean drive-through service time of Taco Bell is between % probability that the mean drive-through service time of Taco Bell is between seconds. seconds and seconds and seconds. seconds.
Transcribed Image Text:The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 90% confidence interval that results from examining 627 customers in Taco Bell's drive-through has a lower bound of 161.2 seconds and an upper bound of 167.0 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 627 customers? The mean service time from the 627 customers is seconds (Type an integer or a decimal. Do not round.) (b) What is the margin of error for the confidence interval? 4 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.) OA. The mean drive-through service time of Taco Bell is OB. One can be OC. One can be D. There is a seconds % of the time. % confident that the mean drive-through service time of Taco Bell is % confident that the mean drive-through service time of Taco Bell is between % probability that the mean drive-through service time of Taco Bell is between seconds. seconds and seconds and seconds. seconds.
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