A Heartland Monitor poll taken in Decmber 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.
A Heartland Monitor poll taken in Decmber 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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