What is the margin of error, Basic Statistics

The National Quality Research Center at the University of Michigan provides a quarterly measure of consumer opinions about products and services (The Wall Street Journal, February 18, 2003). A survey of 10 restaurants in the Fast Food/Pizza group showed a sample mean customer satisfaction index of 71. Past data indicate that the population standard deviation of the index has been relatively

stable with σ = 5

a. What assumption should the researcher be willing to make if a margin of error is desired?

b. Using 95% confidence, what is the margin of error?

c. What is the margin of error if 99% confidence is desired?

 

Posted Date: 3/30/2013 7:36:04 AM | Location : United States







Related Discussions:- What is the margin of error, Assignment Help, Ask Question on What is the margin of error, Get Answer, Expert's Help, What is the margin of error Discussions

Write discussion on What is the margin of error
Your posts are moderated
Related Questions

A thief is running away in his car with a velocity of 20m/s.A police jeep is following him which is sighted by the thief in his rearview mirror, a convex mirror of focal length 10m

Haha your scam is gonna fail loser

What are the consequences of non-compliance to each accounting concepts?

3. In a management class of 100 students’ three languages are offered as an additional subject viz. Hindi, English and Kannada. There are 28 students taking Hindi, 26 taking Hindi

You have collected data from the factory on a critical to quality attribute. The attached Excel spreadsheet lists the response, Y and four potential predictors. You would like to m

54% of teens own a music player, the probability that both the parent and the teen own music player is 0.264, what is the probability that parent owns music player given that teen


1. In your own words explain the difference between a point estimate and an interval estimate of a parameter? Which is better? Why?  2. What information is necessary to calculat

Define Wages Income is often associated with production workers (sometimes referred to as "blue-collar" workers), non-managers, and other workers whose pay is reliant on time wo