Follow the requirement to compose a 350words essay using the given calculation.The calculation is provided below, please write a new

essay using this calculation. Which means except the calculation, every

sentences else needs to be writing on your own words.All the work has to be 100percent original.

gbs_essay_13.docx

Unformatted Attachment Preview

Don't use plagiarized sources. Get Your Custom Essay on

250.Follow the requirement to compose a 350words essay using the given calculation.

Just from $13/Page

The calculation is provided below, please write a new essay using this calculation. Which

means except the calculation, every sentences else needs to be writing on your own words.

Essay

1. Complete the essay using the information below.

Case Study

Background:

Land and Agua Insurance Company has a call center in Tempe, Arizona. The business

was originally established in Phoenix, Arizona in 1972 as a small business, and it has

grown with the population of the area. The insurance company specializes in bundling

insurance for cars, off-road vehicles, and watercraft (e.g., jet skis and boats). The

company has 150,000 clients in Arizona.

Marjorie Jones, Vice President of Operations, is concerned about customer complaints

and amount of time representatives are taking to resolve the calls. After studying the

issue, the company implemented improvements to operations, and a new data sample

was collected after three months. You are responsible for analyzing the results to

determine whether the improvements made a difference, and determining if the new

processes are meeting customer specifications. Additionally, you must review the data

and predict the customer call time if a defect occurs.

2. Answer the question below in essay format. Your essay must include an intr oduction, a

body, and a conclusion. It must address all relevant parts of each question. Your

response should be a minimum of 500 words in length, and it should include both the

appropriate statistics and support for the analysis and interpretation. Make s ure to cite

any source you use. Proper citation format for a source includes the name of the

author(s), the title of the work, the date of the publication, and the page number if you

directly quote the source.

Essay Questions: New Call Time

Using the New Call Center Data, provide a summary report for the vice president including

the following information in an essay with a minimum of 500 words:

Using the two-sample hypothesis test comparing old call time to new call time at a .05

level of significance, discuss the hypothesis test assumptions and tests used. Provide

the test statistic and p -value in your response. Evaluate the results of the hypothesis

test with the scenario. Provide recommendations for the vice president.

Using new call time and coded quality, develop a prediction equation for new call

time. Evaluate the model and discuss the coefficient of determination, signi ficance,

and use the prediction equation to predict a call time if there is a defect.

Evaluate whether the new call time meets customer specification. As stated in a

previous lesson, customers indicated they did not want a call time longer than 7.5

minutes. Assume a standard deviation of 2 min is acceptable. Is the call center now

meeting the customer specifications? If not where is the specification not being met?

Explain your answers.

Answer:

In solving two-sample hypothesis test, z-test is used. Basing on this case, there are two

different assumptions listed. Considering the null hypothesis, there is similarity of both

sample average of old time and the new time. According to the alternative hypothesis,

the sample average of the old and new call is completely different. During the

calculation, there is need of sample size in the analysis. The assumption summation of

the old call is equal to 11.066.In the new calls, the same function calculation is applied,

and the sample size of the new call is assumed to be equal to 8.742.In the calculation of

the sample variance, the value of the old call (11.066) is assumed to be y while the

value of new calls (8.853) is assumed to be x. The statistical test formula is defined as

t= (mean x-mean y) or [s*sqrt (1/mean y+1/mean x), where s=sqrt (mean x*s^2x +

mean y*s^2y) (John, 2014). In calculation of the values, statistical test is given by

[(170*11.066 +170*8.853)/(11.066+8.853)=sqrt 11.02=4.04. After that, all the data is

feed to the formula,(11.066-8.853)/[4.04*(1/170+1/170)], 5.296 is the final answer of

the test statistics.

According to the analysis of the critical value at 0.05 levels of the significant are 3.985.

Given the fact that 5.296 is higher than 3.985, the alternative hypothesis is applied since

the sample average of the old call, and the new request is not identical. In accordance

to test statistics, verification for the advancement in the original call, based on the

average test and recommend to the vice president (Wargocki, 2014).

“A correlation coefficient indicated both the strength and direction of their linear

relationship between a dependent and independent variable” (John, 2014). Hypothesis

test is carried out to examine if the population association coefficient is considerably

from the zero-based correspondence coefficient. To fit a prediction equation for a new

call data with code quality, we can apply hypothesis text. Regression formula is given by

Y=a+bz where z is the coded quality where the value for z is either 0 or 1. “The

regression formula assists in approximating the dependent value given an independent

variable”(John, 2014). According to the data, the sum of z*y is 142.8, the sum of z is 16,

the sum of z^2 is 16.Through feeding the given data in the formula b=(n*sum of z*ysum of y*sum of z)/n*sum of z^2-mean of z^2=(170*142.81328*16)/[170*16(0.106)^2]=0.0698;a=sum of y/n-b*(sum of z/n)=1328/1700.0698(16/50)=7.986. Therefore, the prediction equation for the new call is

Y=7.986+1*0.0698.

To evaluate customer’s approval, when the average call duration is 7 min with a

standard deviation of 2 min is acceptable. The z test is used to ensure customers

fulfillment by sample mean Y=7.978.A null hypothesis is assumed to be uy=7 while the

alternative theory is considered to be uy not equal to 7. In calculating the z value we use

formula (mean y-uy)/s*sqrt (ny). After feeding the data, the answer is 8.02. In

connection with 0.05 levels, if crucial, the critical p-value is 2.00. From the result it is

clear that the z observed is higher than z recorded, an alternative hypothesis is put into

consideration since the sample average of the old call is not the same (Blair, 2013).

About recommendation, it is very crucial to verify the advancement in the new request

on the bases of an average test.

Example Process Capability

Net weight specification = 9.0 oz ? 0.5 oz

Process mean = 8.80 oz

Process standard deviation = 0.12 oz

Cp= (Upper Specification-Lower Specification)/6(standard deviation)

Cp=(9.5-8.5)/(6*0.12)=1.39

References

Wargocki, P., Wyon, D. P., & Fanger, P. O. (2014). The performance and subjective

responsesof call-center operators with new and used supply air filters at two outdoor

air supplyrates. Indoor air, 14(s8), 7-16

.Blair, C. D. (2013). U.S. Patent N. 7,203,285. Washington, DC: U.S. Patent and

Trademark Office.

Jenkins, P., Olivier, M., Hodges, R., Parker, H. S., Farris, M., Mosby, K., … & Cot, A.

(2014). Preparing for Storms in Louisiana Take Home Guide, (English/Spanish)

John Walker, S. (2014). Big data: A revolution that will transform how we live, work, and

think.

…

Purchase answer to see full

attachment

Basic features

- Free title page and bibliography
- Unlimited revisions
- Plagiarism-free guarantee
- Money-back guarantee
- 24/7 support

On-demand options

- Writer’s samples
- Part-by-part delivery
- Overnight delivery
- Copies of used sources
- Expert Proofreading

Paper format

- 275 words per page
- 12 pt Arial/Times New Roman
- Double line spacing
- Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Delivering a high-quality product at a reasonable price is not enough anymore.

That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
The price is based on these factors:

Academic level

Number of pages

Urgency