Answered: We wish to develop a 94% confidence…

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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A survey collected data on attitudes toward the quality of customer service in retail stores. The survey found that 270 of the 750 American adults sampled felt that customer service is better today than it was two years ago.

We wish to develop a 94% confidence interval for the proportion of American adults who feel customer service is better today than it was two years ago.

What is the population?

A) the 750 American adults sampled

B) customer service representatives

C) all American adults

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Step 1

We have to decide the population to develop 94% confidence interval for the proportion of American adults who feel customer service is better today than it was two years ago.

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$Data Collection, Sampling Methods, and Bias$

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