Earliest due date, Basic Statistics

Q1.(i)   A manufacturing firm has previously sequenced its jobs using the "Shortest Operation Time" (SOT) rule.  This has resulted in poor delivery performance with many jobs being delivered late.  They have now changed to the "Earliest Due Date" (EDD) rule in an attempt to improve their service to customers.  Two samples of data, one using SOT and one using EDD are shown below:

(a)    Use a SIMPLE test to check if the data can be regarded as "reasonably" Normal.

(b)   Has the delivery performance improved since the new (EDD) rule was introduced?  Explain your answer.

Note: "Negative Lateness" means the job was Early.

2280_Earliest Due Date.png

(ii)     Fluorescent light tubes used by a firm have a target life of 1600 hours.  However, accumulated data shows a mean time to failure of 1570 hours.  What proportion of the tubes could be expected to achieve the target life? (Explain your choice of model.).

Posted Date: 2/26/2013 12:34:55 AM | Location : United States







Related Discussions:- Earliest due date, Assignment Help, Ask Question on Earliest due date, Get Answer, Expert's Help, Earliest due date Discussions

Write discussion on Earliest due date
Your posts are moderated
Related Questions
what is the form of the answers in probability? in decimal? in fraction? or what?

what is historigram in statistics please give the problems and there solution in statistics as soon as possible

Depreciation during the financial year  The Resources which are bought during the economical season and its determined that the Depreciation will be incurred on them @ 10% PA it

difference between historigrams and histogram

question.. A prevent of huge m1 and bodyweight w1 = m1g goes on a stage frictionless exterior. It is attached by a gentle versatile string moving past over a little frictionless l

How can costs be classified by objective?

Problems and solutions in marginal costing

In November and December 2010, Lane Co., a newly organized magazine publisher, received $90,000 for 1,000 three-year subscriptions at $30 per year, starting with the January 2011 i

Write a short note on Sale of An Asset on account of Depreciation. Ans. An asset can be sold anytime before or after its useful life estimated time, in case the asset is sold more

In marketing research field surveys are commonly used to collect primary data from the respondents. 1. Through Personal Interviews: The investigator follows a rigid proced