Question

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 4.287 minutes with a standard deviation of 1.638 minutes. Show work if necessary.

- What is the null hypothesis? (1 point)

- What is the alternative hypothesis? (1 point)

- Is it a one-tailed or two-tailed test? (1 point)

- Which test statistic should you use? (1 point)

- Calculate . Round to three decimal places. (1 point)

- Calculate the appropriate test statistic. Round to three decimal places. (1 point)

- Calculate the degrees of freedom. (1 point)

- Using an alpha of 0.05, what is the critical value(s)? (1 point)

- Based on the test statistic and critical value, what is your decision? (1 point)

- The results are/are not statistically significant at an alpha level of ______ and we conclude __________________ (research question).

Answer #1

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 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...

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?...

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...

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...

Suppose a bank? branch, located in a residential? area, is
concerned with its service during the? noon-to-1 pm lunch hour. The
waiting? times, in? minutes, collected from a sample of 15
customers during this? hour, are listed below. Complete parts? (a)
through? (d) below.
9.58 5.94 8.05 5.82 8.77 3.91 8.11 8.42 10.56 6.72 5.73 4.14
6.23 9.86 5.41
a. Compute the mean and median.
The mean is
?(Round to two decimal places as? needed.)
The median is
?(Type an...

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...

A Security Pacific Bank branch has opened up a drive through
teller window. There is a single service lane, and customers in
their cars line up in a single line to complete bank transactions.
The average time for each transaction to go through the teller
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What is the probability that a customer gets to complete his/her...

A bank is designing a new branch office and needs to determine
how much driveway space to allow for cars waiting for drive up
teller service. The drive up service will have three tellers and a
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setting, the average service time for drive up tellers is 4 minutes
per customer and average arrival rate is 36 customers per hour. It
is expected that the new bank will have...

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