Economic future: A Heartland Monitor poll taken in December 2016 obtained responses from 990 adult Americans to the question “How would you rate the current state of the economy? Is it excellent, good, fair, or poor?” The following table presents the results, along with the proportions of people who gave these responses in 2015.
Economic future: A Heartland Monitor poll taken in December 2016 obtained responses from 990 adult Americans to the question “How would you rate the current state of the economy? Is it excellent, good, fair, or poor?” The following table presents the results, along with the proportions of people who gave these responses in 2015.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Economic future: A Heartland Monitor poll taken in December 2016 obtained responses from 990 adult Americans to the question “How would you rate the current state of the economy? Is it excellent, good, fair, or poor?” The following table presents the results, along with the proportions of people who gave these responses in 2015.
View |
2015 Proportion |
2016 Frequency |
---|---|---|
Excellent |
0.01 |
20 |
Good |
0.20 |
273 |
Fair |
0.46 |
414 |
Poor |
0.33 |
283 |
Can you conclude that the proportions of people giving the various responses changed between 2015 and 2016? Use the 0.01 level of significance.
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