Question
In: Statistics and Probability
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 5.4 nbsp 5.7 nbsp 6.2 nbsp 6.8 nbsp 7.6 nbsp 7.8 nbsp 8.6 nbsp 9.2 nbsp 9.7
The coefficient of variation for the waiting times at Bank A is
b. find coefficient of variance for vaiting times in Bank B: %
Solutions
orchestra answered 2 years agoRelated Solutions
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 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...
The data table contains waiting times of customers at a bank, where customers enter a single...
The data table contains waiting times of customers at a bank,
where customers enter a single waiting line that feeds three teller
windows. Test the claim that the standard deviation of waiting
times is less than 2.3 minutes, which is the standard deviation of
waiting times at the same bank when separate waiting lines are used
at each teller window. Use a significance level of 0.01. Complete
parts (a) through (d) below. customer waiting times (in minutes)
8.1 7.2 6.4...
The data table contains waiting times of customers at a bank, where customers enter a single...
The data table contains waiting times of customers at a bank,
where customers enter a single waiting line that feeds three teller
windows. Test the claim that the standard deviation of waiting
times is less than 1.8 minutes, which is the standard deviation of
waiting times at the same bank when separate waiting lines are used
at each teller window. Use a significance level of 0.05. 1. Compute
the test statistic. 2.Find the P-value of the test statistic.
6.8
7.4...
The data table contains waiting times of customers at a bank, where customers enter a single...
The data table contains waiting times of customers at a bank,
where customers enter a single waiting line that feeds three teller
windows. Test the claim that the standard deviation of waiting
times is less than 1.5 minutes, which is the standard deviation of
waiting times at the same bank when separate waiting lines are used
at each teller window. Use a significance level of 0.05. Complete
parts (a) through (d) below.
A. Identify the null and alternative hypotheses for...
The waiting times (in minutes) of a random sample of 20 people at a bank have...
The waiting times (in minutes) of a random sample of 20 people
at a bank have a sample standard deviation of 3.4 minutes.
Construct a confidence interval for the population variance sigma
squared and the population standard deviation sigma. Use a 90 %
level of confidence. Assume the sample is from a normally
distributed population.
1. The waiting times (in minutes) of a random sample of 21 people at a bank...
1. The waiting times (in minutes) of a random sample of 21
people at a bank have a sample standard deviation of 3.5 minutes.
Construct a confidence interval for the population variance sigma
squared and the population standard deviation sigma. Use a 99 %
level of confidence. Assume the sample is from a normally
distributed population. What is the confidence interval for the
population variance sigma squared?
2.You are given the sample mean and the population standard
deviation. Use this...
The table below shows the time in minutes that customers spent waiting in a bank....
The table below shows the time in
minutes that customers
spent waiting in a
bank.
Time (min.)
Frequency
5
7
6-10
8
11-15
9
16-20
4
21-25
6
Calculate the mean, mode and
median [4+4 + 4]
(b) Calculate the
variance.
[5]
(c) Calculate the standard
deviation.
[2]
(d) Calculate the coefficient of
skewness
[3]
(e) Calculate the coefficient of variation.
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