Case Synopsis
In this case, we have Quality Associates, Inc. a consulting firm advising its client about sampling and statistical procedures that can be used to control their manufacturing process. Their client has offered samples to be analyzed, so they can quickly learn whether the process is operating satisfactorily or corrective actions needs to be taken. The numbers given in the case were as follows: assumed population standard deviation is equal to .21, sample size is equal to 30 and the test value of the mean was 12. They also stated the two hypotheses to be tested: the null hypothesis that the population is equal to 12 and the alternative hypothesis that the mean is not equal to 12. This indicates a two tailed tests to determine whether or not to reject the null hypothesis. The 4 provided sample sizes each contained 30 observations, indicating a normal distribution and z test statistics.

Methodology
The first question required conducting a hypothesis test for each sample at the .01 level of significance. Based upon the test, determine if any corrective actions need to be taken. There are two approaches to hypothesis testing, the p-value approach and the critical value approach. The first step for the p-value approach was to calculate the mean for each sample. In order, they were: 11.9587| 12.0287| 11.8890| 12.0813|

Next, was to calculate standard error, by using the formula sigma divided by the square root of n. This came out to be .0383. To find the z test statistic subtract the test value of 12 from the sample mean and divide by the standard error.

The z test statistic for each sample were as follows:
-1.0966| 0.7493| -2.8982| 2.1227|

The 1 tail p-value could then be found by using the normsdist function in Excel. This function indicates probability to the left of the value, so positive numbers were subtracted from 1. Since this is a two tailed test, the values were...

...QualityAssociatesInc. |
To: | Peter Dalley |
From: | Harp Bhander |
Date: | 5/17/2013 |
Re: | Analysis Results |
QualityAssociates, a consulting firm has been approached by a client to analyze their manufacturing process. The client came to QualityAssociates with a sample of 800 observations that they had collected during times when the manufacturing process was running smoothly....

...QualityAssociates, a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturing processes. In particular application, a client gave QualityAssociates a sample of 800 observations taken during a time in which that client’s process was operating satisfactorily. The sample standard deviation for these data was 0.21; hence with so much data, the population standard...

...CASE 7 – QUALITYASSOCIATESINC.
BACKGROUND (CASE STUDY WRITE UP)
QualityAssociates, Inc. is a consulting firm who advises its clients about statistical and sampling methods that can be used to control their manufacturing procedures. In this particular case we consider a production line designed to fill bottles of a shampoo with a mean weight of 12 ounces of shampoo per bottle. Quality...

...QualityAssociates, Ins.
QualityAssociates, Ins., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturing processes. In one particular application, a client gave QualityAssociates a sample of 800 observations taken during a time in which that client’s process was operating satisfactorily. The sample standard deviation for these data...

...QualityAssociates, Inc. Report
A company has approached QualityAssociates, Inc. to verify that their sampling and statistical procedures are working efficiently. A sample of 800 units has been taken for observations for the study while operations were known to be operating at satisfactory levels. .21 has been set as the sample standard deviation and likewise so has the population standard deviation...

...status quo can always be challenged. This echoes with the infinite PDCA (Plan-Do-Check-Act) cycle from the teachings of Walter Deming which undoubtedly influenced the Japanese way of thinking on quality and subsequently coming up with the idea of Kaizen and making it their way of doing.
Quality circles
Quality circles is an important organ of Kaizen, they consist of an informal group of people that involves operators, supervisors, managers, etc....

...PMGT 423 – 102
PROJECT RISK AND QUALITY MANAGEMENT
Assignment 2
Managing Quality
Eastern Power, Inc.
Prepared by,
Parthvi Lal
300623501
17th February, 2011
1. Outline for Roger Jackson’s report.
Report on: Analysis of winding defects found at Eastend Power , Inc.
To be prepared by consultant: Roger Jackson
Prepared for VP Operations : Jackie Smith
Company : Eastend Power , Inc....

...quality management history, gurus, TQM theories, process improvement, and organizational 'excellence'
The history of quality management, from mere 'inspection' to Total Quality Management, and its modern 'branded interpretations such as 'Six Sigma', has led to the development of essential processes, ideas, theories and tools that are central to organizational development, change management, and the performance improvements that are generally desired...

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