Standard deviation of sampling distribution of sample mean

Assignment Help Operation Management
Reference no: EM132794586

A design engineer wants to construct a sample mean chart for controlling the service life of one of the types of light bulbs her company produces. She knows from numerous previous observations over many years that the output of the process is normally distributed with a mean service life of 700 hours and a standard deviation of 30 hours. On four recent production batches, she tested service life on random samples of ten bulbs.

a) What is mean of sample means (Grand mean)?

b) What is the standard deviation of sampling distribution of sample mean?

c) What are the lower control limit (LCL) and upper control limit (UCL) of the control chart (Z=3)?

Reference no: EM132794586

Questions Cloud

What pear december income statement should report income : Cinn's common stock, and no acquisition differentials are relevant. Pear's December 31 income statement should report income before taxes of
Estimate the variable maintenance cost per mile traveled : Estimate the variable maintenance cost per mile traveled and the fixed monthly maintenance cost for the firm, using the hi-lo method
What amount of equity method goodwill results : The fair value of its net assets was $600,000. On December 31, what amount of equity method goodwill results from this acquisition?
Create organizational culture on the farm : What can farmers do to create organizational culture on the farm?
Standard deviation of sampling distribution of sample mean : a) What is mean of sample means (Grand mean)? b) What is the standard deviation of sampling distribution of sample mean?
How should the event be disclosed or recognized : How should this event be disclosed or recognized? Nancarrow Corp. released its financial statements for the year ended December 31, Year 7, on March 15
Identify the bottleneck in the repair process : -Draw a process flow diagram and identify the bottleneck in the repair process.
Identify and briefly define one emerging technology : Identify and briefly define one emerging technology that is currently being adopted or likely to be adopted in the near future to change the audit process
Which circumstances does substantial doubt exist : Which circumstances does substantial doubt exist about an entity's ability to continue as a going concern? The entity is not in compliance with statutory

Reviews

Write a Review

Operation Management Questions & Answers

  The potential risks that go with discharging an employee

It is apparent that an employee should be fired. The manager wants to fire the low-performing employee immediately. Set up a meeting with this manager and discuss the best methods for firing an employee. Explain the steps that you recommend to the ma..

  Trolley is hurtling toward five workers on the track

A trolley is hurtling toward five workers on the track, and they will be killed if the trolley reaches them.

  Write a one page overview of your plan for the startup funds

Write a one page overview of your plan for the startup funds and working capital strategy for your Tax Preparation business plan.

  What roles such media may play in marketing communication

Discuss what roles such media may play in marketing communication. Are there ethical issues involved in using stealth ads?

  Getting the cash-concepts and summaries

Evaluate the business' current business strategy; propose a change in direction that would improve its prospects.

  Name four methods of quantitative analysis

Name four methods of quantitative analysis that are useful in informing the facility location decision. How can each of the methods assist you in location decisions. Provide examples for each of the four.

  Strategic approach to human resource management

Assess Southwest Airlines’ strategic approach to human resource (HR) management.

  Sudden change in level of interest rates be categorized

In a SWOT analysis, which of the following might be considered a strength? In PEST, how would sudden change in level of interest rates be categorized?

  What are the common perceptual distortions

What are the common perceptual distortions? How does goal-setting influence motivation? For marketers who want to learn more about men and the reasons why they participate in bro-cations, what marketing research methods would you recommend and why?

  What is meant by the term pocket veto

What is meant by the term, "pocket veto"?

  Electric service for businesses and consumers

In many geographic areas, there is only a single provider for gas and electric service for businesses and consumers. However, the government regulates that firm to ensure price protection for the buyer. This is an example of

  Investigate cases of domain name disputes

Investigate cases of domain name disputes. Examine a case that you find especially interesting. Who were the parties involved?

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd