Construct confidence interval different designs for air tank

Reference no: EM131407737

A compressor manufacturer is testing two different designs for an air tank. Testing involves pumping air into a tank until it bursts, then noting the air pressure just prior to tank failure. Four tanks of design A are found to fail at an average of 1400 pounds per square inch (psi), with a standard deviation of 250 psi. Six tanks of design B fail at an average of 1620 psi, with a standard deviation of 230 psi.

Assuming normal populations with equal standard deviations, use the 0.10 level of significance in comparing the two designs. Construct and interpret the 90% confidence interval for the difference between the population means.

Reference no: EM131407737

Questions Cloud

How are the concepts presented similar to ones we learned : How are the concepts presented similar to ones we learned about with McDevitt? Why you picked this topic over others and how it will enrich your understanding What learning objectives does this topic cover?

Assignment on labor relations : Use the Internet or Strayer Library to research a publicly traded U.S.-based company with a focus on its labor negotiating practices and any specific labor-related issues the company may be experiencing.

Are human freedom and personal responsibility illusions : Are human freedom and personal responsibility illusions? Or is human behavior fundamentally different from a rat's behavior in a Skinner box? If so, how

Write essay that discusses the biological exchange : Write essay that discusses the biological exchange and its effects on societies in Europe and North America. Be sure to think about Native Americans, Colonists and people in Europe.(Biological Exchange is sometimes called the Columbian Exchange). ..

Construct confidence interval different designs for air tank : Assuming normal populations with equal standard deviations, use the 0.025 level of significance in testing the engineer's claim.

Union management and organization : 1. Summarize the historical and legal framework which provides the foundations for the American system of labor / management relations. 2. Analyze the actions of unions and management to determine basic compliance with the major U.S. federal labor l..

Determine the cost of capital and how to maximize returns : Use technology and information resources to research issues in financial management. Write clearly and concisely about financial management using proper writing mechanics.

What factors may impact increase of health services supply : What factors may impact the increase or decrease of health services supply and demand in your county? Provide an example of a supply and demand curve to describe the health care utilization in your county.

Calculate the mean and standard deviation for each variable : Calculate the mean and standard deviation for each variable by using the above class data. You may calculate these descriptive statistics by using Excel or hand

User Account

All Pages