(a) What is the mean service time from the 521 customers? The mean service time from the 521 customers is seconds (Type an integer or a decimal. Do not round.)
(a) What is the mean service time from the 521 customers? The mean service time from the 521 customers is seconds (Type an integer or a decimal. Do not round.)
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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![**Drive-Through Service Time Analysis**
The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval, derived from examining 521 customers at Taco Bell's drive-through, reveals a lower bound of 152.6 seconds and an upper bound of 158.8 seconds. Below are tasks related to this data.
---
**Part (a)**
**Question:** What is the mean service time from the 521 customers?
**Answer:** The mean service time from the 521 customers is [ ] seconds.
*Note:* Type an integer or a decimal. Do not round.
---
**Explanation:** The confidence interval provides a range in which the true mean service time is likely to fall, with 99% certainty. The mean service time is typically calculated as the midpoint of the interval, which would be (152.6 + 158.8) / 2 seconds.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5b37097f-a982-4074-a95e-7bc00cf4b046%2F5e9c33af-956a-448a-a175-22f650ef1d0f%2F9nfzcoo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Drive-Through Service Time Analysis**
The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval, derived from examining 521 customers at Taco Bell's drive-through, reveals a lower bound of 152.6 seconds and an upper bound of 158.8 seconds. Below are tasks related to this data.
---
**Part (a)**
**Question:** What is the mean service time from the 521 customers?
**Answer:** The mean service time from the 521 customers is [ ] seconds.
*Note:* Type an integer or a decimal. Do not round.
---
**Explanation:** The confidence interval provides a range in which the true mean service time is likely to fall, with 99% certainty. The mean service time is typically calculated as the midpoint of the interval, which would be (152.6 + 158.8) / 2 seconds.
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