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The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A Bank B 6.4 4.2 Click the icon to view the table of Chi-Square critical values. 6.6 5.3 6.7 5.8 6.8 6.2 Construct a 90% confidence interval for the population standard deviation ở at Bank A. min

The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A Bank B 6.4 4.2 Click the icon to view the table of Chi-Square critical values. 6.6 5.3 6.7 5.8 6.8 6.2 Construct a 90% confidence interval for the population standard deviation ở at Bank A. min

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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**Waiting Times Analysis at Two Different Banks** The data below displays the waiting times (in minutes) of customers at two different banks: - **Bank A** has a single waiting line that feeds three teller windows. - **Bank B** allows customers to enter any one of three different lines that have formed at three teller windows. ### Waiting Times Data - **Bank A:** 6.4, 6.6, 6.7, 6.8, 7.1, 7.3, 7.4, 7.9, 7.9 - **Bank B:** 4.2, 5.3, 5.8, 6.2, 6.8, 7.6, 7.6, 7.6, 8.5, 9.3, 10.0 ### Analysis Task 1. **Objective:** Construct a 90% confidence interval for the population standard deviation (σ) at Bank A. 2. **Reference:** Consult the table of Chi-Square critical values for calculations. ### Instructions - Calculate the 90% confidence interval for σ at Bank A, rounding to two decimal places as needed. - Use the provided checkboxes to input the minimum and maximum values of the confidence interval. This exercise aims to help students understand and apply statistical methods to real-world scenarios, enhancing their ability to analyze and interpret data systematically.
Transcribed Image Text:**Waiting Times Analysis at Two Different Banks** The data below displays the waiting times (in minutes) of customers at two different banks: - **Bank A** has a single waiting line that feeds three teller windows. - **Bank B** allows customers to enter any one of three different lines that have formed at three teller windows. ### Waiting Times Data - **Bank A:** 6.4, 6.6, 6.7, 6.8, 7.1, 7.3, 7.4, 7.9, 7.9 - **Bank B:** 4.2, 5.3, 5.8, 6.2, 6.8, 7.6, 7.6, 7.6, 8.5, 9.3, 10.0 ### Analysis Task 1. **Objective:** Construct a 90% confidence interval for the population standard deviation (σ) at Bank A. 2. **Reference:** Consult the table of Chi-Square critical values for calculations. ### Instructions - Calculate the 90% confidence interval for σ at Bank A, rounding to two decimal places as needed. - Use the provided checkboxes to input the minimum and maximum values of the confidence interval. This exercise aims to help students understand and apply statistical methods to real-world scenarios, enhancing their ability to analyze and interpret data systematically.
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