What is the margin of error, Basic Statistics

Assignment Help:

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?

 


Related Discussions:- What is the margin of error

Meaning of book keeping, What do you understand by the term “Book Keeping”?...

What do you understand by the term “Book Keeping”? Ans. In nutshell the attending the Accounting Process is called or referred as Book Keeping in other plain words we may concern

Hypothesis and statistical test, College administrators across the country...

College administrators across the country have become very concerned after noticing an increase in the number of deaths in college students from binge drinking.  Several psychologi

Determine the probability, Question 1: A mail-order firm has a circular...

Question 1: A mail-order firm has a circular which elicits a 10% response rate. Suppose 20 of the circulars are mailed as a market test in a new geographic area. Assuming that

Role of accountant, What are the roles of accountant, let me know the caree...

What are the roles of accountant, let me know the career opportunity in accounting subject?

Galvanometer to voltameter, a millemeter ammeter of resistance 5m amp is to...

a millemeter ammeter of resistance 5m amp is to be used to measure a potential difference of 50volt.calculate the multiplier resistance

Define accounting Actuarial basis , A basis used in processing the quantity...

A basis used in processing the quantity of advantages to be created regularly to a finance or consideration so that the complete advantages plus the complicated income thereon will

What is a sole proprietorship, What is a sole proprietorship? A sole pr...

What is a sole proprietorship? A sole proprietorship is a form of business organization that is owned by one person. The owner is referred to as a sole proprietor. In accoun

Operation research, A paper mill produces two grades of paper viz., X and Y...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

Write Your Message!

Captcha
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