Question
In: Statistics and Probability
The values listed below are waiting times (in minutes) of customers at two different banks. At...
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 |
6.5 |
6.6 |
6.7 |
6.8 |
7.1 |
7.2 |
7.5 |
7.9 |
7.9 |
7.9 |
|
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Bank B |
4.2 |
5.4 |
5.8 |
6.2 |
6.8 |
7.7 |
7.7 |
8.5 |
9.3 |
10.00 |
a) Using Chi-Square critical values construct a 90% confidence interval for the population standard deviation σ at Bank A.
b) Construct a 99% confidence interval for the population standard deviation σ at Bank A.
c) Construct a 99% confidence interval for the population standard deviation σ at Bank B.
Interpret the results found in the previous parts. Do the confidence intervals suggest a difference in the variation among waiting times? Does the single-line system or the multiple-line system seem to be a better arrangement?
A.
The variation appears to be significantly lower with a single line system. The single-line system appears to be better.
B.
The variation appears to be significantly lower with a single line system. The multiple-line system appears to be better.
C.
The variation appears to be significantly lower with a multiple-line system. The single-line system appears to be better.
D.
The variation appears to be significantly lower with a multiple-line system. The multiple-line system appears to be better.
Solutions
orchestra answered 2 years agoRelated Solutions
The values listed below are waiting times? (in minutes) of customers at two different banks. At...
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 6.36.3 6.66.6 6.76.7 6.86.8 7.17.1 7.37.3 7.47.4 7.87.8
7.87.8 7.87.8 Bank Upper BBank B 4.24.2 5.45.4 5.85.8 6.26.2 6.76.7
7.77.7 7.77.7 8.68.6 9.39.3 10.010.0 Construct aa...
The values listed below are waiting times (in minutes) of customers at two different banks. At...
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 6.4 6.6 6.7 6.8 7.1 7.3 7.4 7.7 7.7 7.7 Bank B 4.1 5.3 5.9
6.2 6.8 7.6 7.6 8.4 9.4 10
Construct a 99% confidence...
The values listed below are waiting times (in minutes) of customers at two different banks. At...
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
6.46.4
6.66.6
6.76.7
6.86.8
7.17.1
7.27.2
7.57.5
7.87.8
7.87.8
7.87.8
Bank Upper BBank B
4.24.2
5.35.3
5.85.8
6.16.1
6.76.7
7.87.8
7.87.8
8.48.4
9.49.4
10.010.0
LOADING...
Click...
The values listed below are waiting times (in minutes) of customers at two different banks. At...
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 6.5 6.6 6.7 6.8 7.1 7.3 7.6 7.9 7.9 7.9
Bank Upper B 4.3 5.3 5.9 6.2 6.8 7.8 7.8 8.4 9.2 10.0
Construct a 95%...
The values listed below are waiting times (in minutes) of customers at two different banks. At...
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
6.46.4
6.66.6
6.76.7
6.86.8
7.17.1
7.37.3
7.47.4
7.97.9
7.97.9
7.97.9
Bank B
4.14.1
5.35.3
5.85.8
6.26.2
6.66.6
7.87.8
7.87.8
8.48.4
9.39.3
10.010.0
Construct a 99% confidence...
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting...
Waiting times (in minutes) of customers at a bank where all
customers enter a single waiting line and a bank where
customers wait in individual lines at three different teller
windows are listed below. Find the coefficient of variation for
each
of the two sets of data, then compare the variation.
Bank A (single line): 6.5 6.6 6.7 6.9 7.1 7.3 7.4 7.6 7.7 7.8
Bank B (individual lines): 4.4 5.4 5.7 6.2 6.7 7.7 7.8 8.4 9.4
9.9
The...
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting...
Waiting times (in minutes) of customers at a bank where all
customers enter a single waiting line and a bank where customers
wait in individual lines at three different teller windows are
listed below. Find the coefficient of variation for each of the two
sets of data, then compare the variation. Bank A (single line):
6.6 nbsp 6.6 nbsp 6.7 nbsp 6.8 nbsp 7.0 nbsp 7.3 nbsp 7.5 nbsp 7.7
nbsp 7.7 nbsp 7.8
Bank B (individual lines): 4.4 nbsp...
Waiting times (in minutes) of customers in a bank where all customers enter a single waiting...
Waiting times (in minutes) of customers in a bank where all
customers enter a single waiting line and a bank where customers
wait in individual lines at three different teller windows are
listed below. Find the mean and median for each of the two
samples, then compare the two sets of results. Single Line 6.5 6.6
6.7 6.8 7.0 7.1 7.5 7.6 7.6 7.6 Individual Lines 4.2 5.4 5.8 6.2
6.5 7.6 7.6 8.6 9.2 9.9 The mean waiting time...
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting...
Waiting times (in minutes) of customers at a bank where all
customers enter a single waiting line and a bank where customers
wait in individual lines at three different teller windows are
listed below. Find the coefficient of variation for each of the two
sets of data, then compare the variation. Bank A (single line):
6.5 6.6 6.7 6.8 7.1 7.4 7.4 7.6 7.7 7.8 Bank B (individual lines):
4.2 5.4 5.8 6.2 6.7 7.7 7.8 8.6 9.3 9.9
The coefficient...
14.Waiting times (in minutes) of customers at a bank where all customers enter a single waiting...
14.Waiting times (in minutes) of customers at a bank where all
customers enter a single waiting line and a bank where customers
wait in individual lines at three different teller windows are
listed below. Find the coefficient of variation for each of the two
sets of data, then compare the variation
Bank A (single line)
Bank B (individual lines)
6.4
4.3
6.5
5.5
6.6
5.9
6.8
6.3
7.1
6.7
7.4
7.6
7.4
7.8
7.7
8.4
7.7
9.4
7.8
9.7
The...
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