bound of 170.2 seconds and an upper bound of 174.6 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 582 customers? The mean service time from the 582 customers is 172.4 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 2.2 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. One can be % confident that the mean drive-through service time of Taco Bell is between seconds. OB. The mean drive-through service time of Taco Bell is OC. There is a seconds. OD. One can be seconds % of the time. probability that the mean drive-through service time of Taco Bell is between % confident that the mean drive-through service time of Taco Bell is seconds and seconds and seconds.
bound of 170.2 seconds and an upper bound of 174.6 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 582 customers? The mean service time from the 582 customers is 172.4 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 2.2 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. One can be % confident that the mean drive-through service time of Taco Bell is between seconds. OB. The mean drive-through service time of Taco Bell is OC. There is a seconds. OD. One can be seconds % of the time. probability that the mean drive-through service time of Taco Bell is between % confident that the mean drive-through service time of Taco Bell is seconds and 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
Related questions
Question

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 582 customers in Taco Bell's drive-through has a lower
bound of 170.2 seconds and an upper bound of 174.6 seconds. Complete parts (a) through (c).
(a) What is the mean service time from the 582 customers?
The mean service time from the 582 customers is 172.4 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 2.2 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. One can be % confident that the mean drive-through service time of Taco Bell is between
seconds.
OB. The mean drive-through service time of Taco Bell is
seconds % of the time.
OC. There is a % probability that the mean drive-through service time of Taco Bell is between
seconds.
D. One can be
% confident that the mean drive-through service time of Taco Bell is
seconds and
seconds and
seconds.
Expert Solution

Step 1: We have given that
Given:
Confidence level = 99%
n = 582
Confidence interval = (170.2, 174.6)
Formula Used:
Step by step
Solved in 3 steps with 4 images

Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman