Estimate the process mean and standard deviation

Reference no: EM131384700

The baking time of painted corrugated sheet metal is of interest. Too much time will cause the paint to flake, and too little time will result in an unacceptable finish. The specifications on baking time are 10± 0.2 minutes. Random samples of size 6 are selected and their baking times noted. The sample means and standard deviations are calculated for 20 samples with the following results:

Σ_i=1 ²⁰ X_i^‾ = 199.8,

Σ_i=1 ²⁰ s_i^‾ = 1.40

(a) Calculate the centerline and control limits for the X‾- and s-charts.

(b) Estimate the process mean and standard deviation, assuming the process to be in control.

(d) If the mean of the process can be shifted to 10 minutes, would you recommend such a change?

(e) If the process mean changes to 10.2 minutes, what is the probability of detecting this change on the first sample taken after the shift? Assume that the process variability has not changed.

Reference no: EM131384700

Questions Cloud

Explain how each property is met by your event : Describe an event in your life that fits the properties of a Bernoulli process, being sure to explain how each property is met by your event. Finally, state the number of trials and the number of successes for your event. Be specific.

What is the purpose of the web site : Who created the web site? (person, professional organization, etc.)What is the purpose of the web site? Who is the target audience? (If this is not explicitly stated, use your own judgment.What type of information is presented?What additional info..

What is your estimate of the standard deviation of the time : Revise the chart, if necessary, assuming special causes for out-of-control points. What is the expected time to make a decision? What is your estimate of the standard deviation of the time to make a decision?

Analyze how your style impacts your performance in class : Analyze how your style impacts your performance in the class. What changes to the class would help to better align the course with your leaning style and why? Please provide specific examples.800words

Estimate the process mean and standard deviation : Calculate the centerline and control limits for the X‾- and s-charts.- Estimate the process mean and standard deviation, assuming the process to be in control.

Identify strategies to control and monitor event : Given the following list of end-user policy violations and security breaches, select three breaches and identify strategies to control and monitor each event to mitigate risk and minimize exposure

Explain based on the afore-mentioned research finding : Explain, based on the afore-mentioned research finding, why and how ‘gender' may affect the results of the study if Xavier would not control for gender?

Can leaders really motivate employees : Can leaders really motivate employees? If so, how and for how long? Is there a way to create and sustain a motivating environment that will also help retain talent? What is it? How does it work?

Discuss the stability of the amount of dissolved oxygen : Discuss the stability of the amount of dissolved oxygen. Revise the control limits, if necessary, assuming special causes for the out-of-control points.

User Account

All Pages