Does it appear that the process was in control

Assignment Help Basic Statistics

Reference no: EM13903733

Assume that items produced are supposed to be normally distributed with mean 35 and standard deviation 3. To monitor this process, subgroups of size 5 are sampled. If the following represents the averages of the first 20 subgroups, does it appear that the process was in control?


Subgroup No.	X	Subgroup No.	X
1	34.0	6	32.2
2	31.6	7	33.0
3	30.8	8	32.6
4	33.0	9	33.8
5	35.0	10	35.8

Subgroup No.	X	Subgroup No.	X
11	35.8	16	31.6
12	35.8	17	33.0
13	34.0	18	33.2
14	35.0	19	31.8
15	33.8	20	35.6

Reference no: EM13903733

Questions Cloud

What role is played by a strong brand : Visit an Internet interactive vehicle-buying service (such as AutoVantage) and compare the various makes offered. Discuss how the close comparisons possible online makes competitive advantages easier to identify. What role is played by a strong br..

What is probability that next subgroup average will fall : what is the probability that the next subgroup average will fall outside the control limits? On average, how many subgroups will have to be looked at in order to detect this shift?

Show where biased coloring helps make the right decisions : Use both conservative coalescing and biased coloring in allocating registers. Show where biased coloring helps make the right decisions.

What are the strengths and weaknesses of agency theory : What are the strengths and weaknesses of agency theory as a means of understanding executives' motivation and behaviour?

Does it appear that the process was in control : Assume that items produced are supposed to be normally distributed with mean 35 and standard deviation 3. To monitor this process, subgroups of size 5 are sampled.

What do firms hope to achieve by introducing profitsharing : What do firms hope to achieve by introducing profitsharing? How likely are they to get what they are after?

How scientific piece rates differ from standard piece rates : Why do piece rates have such a high propensity to cause a breach of the psychological contract and How do ‘scientific' piece rates differ from standard piece rates? Are they any better - and for whom?

What should a firm do if it no longer needs the skills : What should a firm do if it no longer needs the skills that it has been rewarding its employees for acquiring?

Who or what defines performance in an organisation : Why might evaluative and developmental performance management come into conflict, and how can the potential for conflict be minimised?

User Account

All Pages