Determine the 90 percent confidence intervals

Assignment Help Mathematics

Reference no: EM131123437

Suppose that the standard deviation of the tube life for a particular brand of TV picture tube is known to be s = 500, but that the mean operating life is not known. Overall, the operating life of the tubes is assumed to be approximately normally distributed. For a sample of n = 15, the mean operating life is X = 8,900 hr. Determine (a) the 95 percent and (b) the 90 percent confidence intervals for estimating the population mean.

Reference no: EM131123437

Questions Cloud

Critique essay from my peer : Write critique essay from my peer. In the article, Wilson focuses on seven good practice principles in sequence.

What is the decryption function : What is the decryption function, and the decrypted/recovered plaintext? What type of cipher is this? Show your calculations.

Review the thinking like a leader video : In this assignment, you will review the Thinking Like a Leader video, then develop a written description of a leader whom you feel represents exemplary leadership.

Review of current leadership approaches being utilized : For this assignment, you will conduct a literature review of the leadership approaches discussed in this course. These leadership approaches include traits, skills, style, and situational approaches to leadership. You will analyze and synthesize ..

Determine the 90 percent confidence intervals : For a sample of n = 15, the mean operating life is X = 8,900 hr. Determine (a) the 95 percent and (b) the 90 percent confidence intervals for estimating the population mean.

Determine the final lower-of-cost-or-market inventory value : Determine the final lower-of-cost-or-market inventory value for each item. Prepare the necessary December 31 entry under (a) the cost-of-goods-sold method (b) Loss method.

Create a powerpoint slide set or ms moviemaker project : Create a PowerPoint slide set or MS MovieMaker project creating a gratitude demonstration or presentation. Think about who your target audience is and how your topic affects them.

Calculations requested in part a separately for 2009 : calculations requested in Part A separately for 2009 and 2010 using year-end balance sheet account data.

Explain your rationale for your determination : In this Discussion, you will look at these statistical tools for quality improvement and describe the differences between common cause variation and special cause variation. You will also explain any ethical, legal, or moral obligations that would..

User Account

All Pages