User Account

All Pages

Statistics, Basic Statistics

Assignment Help:
Question 1

A courier company conducted a brainstorming session amongst drivers to ascertain the reasons why it was unable to deliver items to households, always right first time. One major reason suggested by drivers during the session was "customer not at home" when the driver arrived. If there were no specific instructions from the customer, for example "leave on door step" or "leave behind garbage bins", drivers were generally reluctant to leave the item unattended. In such cases, items were returned to the company''s warehouse, the customer contacted and an alternative time arranged. For some customers, it took several attempts before an item was delivered successfully. The result was a poor customer experience and significant rework costs incurred by the company.

The company decided to measure the size of the issue, which it classified as the defect "customer not at home". It examined Monday to Friday data from 3rdAugust 2009 to 1stth October 2009 with an intention of developing a baseline from which to consider improvement. It sampled its Monday to Friday deliveries, each day taking 500 random delivery attempts and recording whether the driver was unable to deliver due to "customer not at home". See the data file. There was no reason to believe that Monday was systematically better or worse than Tuesday or Tuesday was systematically better or worse than Wednesday etc.

(a) Summarise the baseline performance of deliveries with respect to the defect "customer not at home". Do not remove any data.

Group Assignment (2010)

Having established the baseline, the company set about asking the courier drivers for improvement suggestions. It was agreed that a solution called "Double SMS" be trialled.

The customer would be sent an SMS advising on possible delivery time windows soon after the item was received in the company''s warehouse. The customer would then select a preferred delivery window. A few hours before the scheduled delivery, a second SMS would be sent, asking the customer for a confirmation that he/she would be at home during the agreed delivery time window. If the customer advised he/she would not be at home, the customer would be offered an alternative delivery window.

Trials with the "Double SMS" solution began on 2nd October and continued until 11th November when enough data points had been gathered to consider the solution successful and sustainable.

(b) Summarise the performance of the new process. Do not remove any data.

(c) Discuss and demonstrate using a single control chart the extent of the improvement that has occurred from the old process to the new process. Do not remove any data.

(d) Recommend what next steps you would take with the new process. You are not required to undertake these steps.

Related Discussions:- Statistics

Time series analysis, what is the interpretation of plots in least square m...

what is the interpretation of plots in least square method

Home Assignments, A survey was conducted among the residents of Pune City, ...

A survey was conducted among the residents of Pune City, its suburbs and the Pune Cantonment area. The following three pie diagrams show their respective preferences for living in

Cost behavior/classificationq, Shipping costs on Merchandise sold--it is a ...

Shipping costs on Merchandise sold--it is a variable cost, but is it a selling/adminstrative cost or product cost? Is it direct or indirect?

Explain Book value, Explain Book value The net quantity at which an advant...

Explain Book value The net quantity at which an advantage or asset group appears on the books of account, as distinguished from its marketplace or intrinsic value where book value

Elaborate bond issue, Elaborate bond issue A reference indicating the exac...

Elaborate bond issue A reference indicating the exacting or different classification or quantity of bonds issued at a specified moment.

Calculate the investments through model, Anna is considering investing $150...

Anna is considering investing $150,000 by dividing it into three investments. But she is not sure how much to put in each one. The first investment is known to follow a uniform dis

Accreted value definition, An assessment time frame for certain purchases a...

An assessment time frame for certain purchases and debt equipment that reviews on the stability piece only that part of their face value that shows major and interest acquired curr

Number of faults to line length, A study on the occurrence of line faults i...

A study on the occurrence of line faults in an electricity supply network was carried out over a two-year period.  Data was collected from six regions on the number of faults per y

State appropriate alternative hypotheses, A cognitive psychologists knows t...

A cognitive psychologists knows that concrete words, which easily evoke images (.e.g. "sunset", "truck") are easier to remember than abstract words, but she would like to know if t

Construct a cumulative relative frequency plot, Examine the distributions o...

Examine the distributions of weight and height. Are there any outliers? If so deal with them appropriately. Create a new variable that divides weight into groups. Produce a tabl

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd