Here are the results of a cross-tabulation table drawn from sample data. Two variables were measured in this study, age and concern about rising inequality in US society.     Very concerned Somewhat concerned Not at all concerned   Over 30 10 35 55   30 or younger 60 25 15           n =     In our study of feelings about inequality in the US ______________% of the sample is over 30   and ____________ % is 30 or younger.   According to our study____________ % of respondents are very concerned about rising   inequality in the US, while __________ % of people we surveyed are not at all concerned.   Importantly, we note that ___________% of respondents who are 30 or younger are very   concerned with rising inequality, while only __________% of respondents over 30 feel this way   about the issue.   Clearly we are onto something here. But, we need to answer a very important question before we go public with this. What is that question and why is it important? How many degrees of freedom are represented in this table? df = _____________   What is the critical value of chi-square for the .05 & .01 alpha levels?   α = .05, critical value = _______          α = .01, critical value = ___________    Compute chi-square using the data in the table above.  χ2 = ______________    Based on this test, we should __________________ the null hypothesis. What does this mean for our study?         What are the highlights of the findings and conclusions? How would they look in a short press release that we can send to the Times paper.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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Here are the results of a cross-tabulation table drawn from sample data. Two variables were measured in this study, age and concern about rising inequality in US society.

 

 

Very concerned

Somewhat concerned

Not at all concerned

 

Over 30

10

35

55

 

30 or younger

60

25

15

 

 

 

 

 

n =

 

 

  1. In our study of feelings about inequality in the US ______________% of the sample is over 30

 

and ____________ % is 30 or younger.

 

According to our study____________ % of respondents are very concerned about rising

 

inequality in the US, while __________ % of people we surveyed are not at all concerned.

 

Importantly, we note that ___________% of respondents who are 30 or younger are very

 

concerned with rising inequality, while only __________% of respondents over 30 feel this way

 

about the issue.

 

Clearly we are onto something here. But, we need to answer a very important question before we go public with this. What is that question and why is it important?

How many degrees of freedom are represented in this table? df = _____________

 

What is the critical value of chi-square for the .05 & .01 alpha levels?

 

α = .05, critical value = _______          α = .01, critical value = ___________

 

 Compute chi-square using the data in the table above.  χ2 = ______________

 

 Based on this test, we should __________________ the null hypothesis. What does this mean for our study?

 

 

 

 

What are the highlights of the findings and conclusions? How would they look in a short press release that we can send to the Times paper.

 

 

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