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

Accrual basis in accounting , The foundation sales whereby income are ackno...

The foundation sales whereby income are acknowledged when gained and considerable regardless of when collected; and costs are noted on a corresponding basis when suffered. All amaz

find the standard deviation, Research Question: Percentage of student...

Research Question: Percentage of students who drank a can, bottle, or glass of soda or pop (not including diet soda or diet pop) at least 1 time per day during the seven days

Define BIENNIUM, Define BIENNIUM A 24-month fiscal era. In Washington, the...

Define BIENNIUM A 24-month fiscal era. In Washington, the biennium expands from July 1 of odd numbered years to June 30 of odd numbered or more years.

Measure central tendency, 1. A researcher is comparing two middle school 7t...

1. A researcher is comparing two middle school 7th grade classes. One class at one school has participated in an arts program (involving putting on a musical play) which emphasized

Proton-electron hypothesis, Proton-electron hypothesis: this was put forwar...

Proton-electron hypothesis: this was put forward in the year 1930 to account for the emission of alpha and beta particles from the nuclei of radioactive elements. The positive char

Definition of batch costing and methods, Batch costing and method of costin...

Batch costing and method of costing whereby identical units produced are treated as a single unit & the cost incurred is shown to the whole of that batch instead of each individual

De Broglie hypothesis and Heinsberg’s uncertainty principle, According to d...

According to de Broglie hypothesis and Heinsberg’s uncertainty principle, if and electron is to exist inside the nucleus, it should posses energy ranging from 20 MeV to 200 MeV. B

Cash flow, A business starts out with a cash balance of £1,000. It then mak...

A business starts out with a cash balance of £1,000. It then makes the following transactions: Buys inventory on credit for £500 Sells a non-current asset for £100 cash Sells goods

Determine the hypothesised value, Read Confidence Intervals and P-values in...

Read Confidence Intervals and P-values in Section C of your Lecture Workbook or on Cecil under Assignment Resources. Consider a study to determine ways the response rate in surveys

Association of Attributes, In an examination 600 candidates appeared, boys ...

In an examination 600 candidates appeared, boys outnumbered girls by 16% of all candidates. number of passed candidates exceeded the number of failed candidates by 310. Boys failin

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