Question Help 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 feed 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 6.3 6.6 6.7 6.8 7.1 6.7 7.3 7.5 7.8 7.8 9.3 7.8 4.2 5.5 5.9 6.3 77 7.7 8.5 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. 0.40 min < oBank A< 0.91 min (Round to two decimal places as needed.) Construct a 90% confidence interval for the population standard deviation o at Bank B. min < OBank B

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section11.1: Measures Of Center And Variation
Problem 31E
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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 feed
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
6.3
6.6
6.7
6.8
7.1
6.7
7.3
7.5
7.8
7.8
9.3
7.8
4.2
5.5
5.9
6.3
77
7.7
8.5
10.0
Click the icon to view the table of Chi-Square critical values.
Construct a 90% confidence interval for the population standard deviation o at Bank A.
0.40 min < oBank A< 0.91 min
(Round to two decimal places as needed.)
Construct a 90% confidence interval for the population standard deviation o at Bank B.
min < OBank B <min
(Round to two decimal places as needed.)
co n
Transcribed Image Text:Question Help 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 feed 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 6.3 6.6 6.7 6.8 7.1 6.7 7.3 7.5 7.8 7.8 9.3 7.8 4.2 5.5 5.9 6.3 77 7.7 8.5 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. 0.40 min < oBank A< 0.91 min (Round to two decimal places as needed.) Construct a 90% confidence interval for the population standard deviation o at Bank B. min < OBank B <min (Round to two decimal places as needed.) co n
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