Question

A bank branch located in a commercial district of a city has the business objective of developing an improved process for serving customers during the noon-to-1:00 P.M. lunch period. The waiting time, in minutes, is defined as the time the customer enters the line to when he or she reaches the teller window. Data are collected from a sample of 15 customers during this hour. The following is the list of time data gathered from the bank branch in the commercial district. 4.31 5.45 3.02 5.13 4.77 2.34 3.54 3.20 4.50 6.20 0.38 5.12 6.46 6.19 3.89 At the 0.05 level of significance, is there evidence that the population mean waiting time is less than 5 minutes?

Answer #1

From the given data,

Now,

As population variance is not given, the test statistic is given by

Assuming null hypothesis is true, the test statistic is

Now, t_{14,0.05} is -1.761.

As the test statistic is not less than the critical value, thus we do not have sufficient evidence to reject null hypothesis.

Thus, we do not have sufficient evidence to say that the population mean waiting time is less than 5 minutes.

A bank branch located in a commercial district of a city has the
business objective of developing an improved process for serving
customers during the noon-to-1:00 p.m. lunch period. The waiting
time, in minutes, is defined as the time the customer enters the
line to when he or she reaches the teller window. Data collected
from a sample of 15 customers during this hour are stored as
follows:
4.21, 5.5,5 3.02, 5.13, 4.77, 2.34, 3.54, 3.20, 4.50, 6.10,
0.38, 5.12,...

A bank branch located in a commercial district of a city has
developed an improved process for serving customers during the
noon-1:00pm lunch period. The waiting time of all customers during
this hour is recorded over the period of a week. A random sample of
30 customers is selected and their waiting time is recorded (see
data file Bank 1). At the 0.05 level of significance is there
evidence that the population mean waiting time is less than 5
minutes?...

Please show me how to use R to solve the problem. thanks!
A bank with a branch located in a commercial district of a city
has developed an improved process for serving customers during the
noon-to-1 P.M. lunch period. The bank has the business objective of
reducing the waiting time (defined as the number of minutes that
elapse from when the customer enters the line until he or she
reaches the teller window) to increase customer satisfaction. A
random sample...

A bank branch located in a commercial district of a city has the
business objective of improving the process for serving customers
during the noon-to-1:00 P.M. lunch period. The waiting time is
defined as the time the customer enters the line until he or she
reaches the teller window. The bank wants to determine if the mean
waiting time is less than 5 minutes. A random sample of 15
customers is selected. Results found that the sample mean waiting
time...

A bank branch located in a commercial district of a city has the
business objective of improving the process for serving customers
during the noon-to-1:00 P.M. lunch period. The waiting time
(defined as the time the customer enters the line until he or she
reaches the teller window) of a random sample of 15 customers is
collected. The bank wants to determine if the mean waiting time is
less than 5 minutes. Results found that the mean waiting time was...

A bank with branches located in a commercial district of a city
and in a residential area has the business objective of developing
an improved process for serving customers during the noon-to-1
P.M. lunch period. Management decides to first study the waiting
time in the current process. The waiting time is defined as the
number of minutes that elapses from when the customer enters the
line until he or she reaches the teller window. Data are collected
from a random...

8.27. The PNC bank manager of WMU branch has developed a new
system to reduce the time customers spend waiting for teller
service during peak hours. The manager hopes the new system will
reduce waiting times from the current nine to ten minutes to less
than 6 minutes.Average waiting time was obtained as 5.46 based on a
random sample of 25 waiting times. Is there enough evidence at the
5% level of significance to validate managers claim? Assume that
the...

Question 1
A bank branch has two automatic teller machines (atms) that are
accessible at all times (even when the branch is closed).
Customers arrive at the ATMs at a rate of 30 customers per hour
with exponentially distributed interarrival times.
Each customer spends an average of 3 minutes to complete the
service, where service time is also exponential.
When the branch is open, arriving customers refuse to join the ATM
queue if it has 3 people or more waiting,...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 13 minutes ago

asked 13 minutes ago

asked 20 minutes ago

asked 22 minutes ago

asked 23 minutes ago

asked 28 minutes ago

asked 35 minutes ago

asked 36 minutes ago

asked 49 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago