The National Quality Research Center at the University of Michigan provides a quar-terly 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 asample mean customer satisfaction index of 71. Past data indicate that the population stan-dard deviation of the index has been relatively stable with a = 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?

Given Data : Sample Size, n = 10 Sample Mean, x̄ = 71 standard…

Answered: The National Quality Research Center at…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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