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
Imagine that a sample of 400 rental units shows that (i) the distribution of rents paid per month is not described by a normal distribution, (ii) that the mean rent of the sampl

Interpretation or Analysis of Financial Statements. Financial report research (or financial analysis) the procedure of comprehension the possibility and earnings of an organizat

mathametical examples of components


Definition of capital market is termed as a market where shares are traded after an initial issue. Capital market is the market where corporations, companies, and government debt

What is the properties of a simple random sample when 50 females are numbered 1 through 50, and males are numbered 51 through 100?

Probability 3DP, a Luxembourg-based company plans to develop and sell highly specialized 3D printers. The cost of product development is estimated at EUR 50,000.-, irrespective

define kurtosis with relevant examples

I have four assignments that are due tomorrow. Can you help?

i want you to make my buisiness statistics assignment