90% confidence interval results: Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit 925 1497 0.61790247 0.012558454 0.59724565 0.63855929 Р Check: 1.Random Sample Stated 2.1497<10% of all adult Americans 3.

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100%
90% confidence interval results:
Proportion Count Total Sample Prop. Std. Err.
Р
L. Limit U. Limit
925 1497 0.61790247 0.012558454 0.59724565 0.63855929
Check:
1.Random Sample Stated
2.1497<10% of all adult Americans
3.
Transcribed Image Text:90% confidence interval results: Proportion Count Total Sample Prop. Std. Err. Р L. Limit U. Limit 925 1497 0.61790247 0.012558454 0.59724565 0.63855929 Check: 1.Random Sample Stated 2.1497<10% of all adult Americans 3.
The General Social Survey (GSS) is an opinion survey that has been conducted for more than 30 years by the National
Opinion Research Center at the University of Chicago. About 2000 adult Americans are given a 90-minute interview
asking about opinions and behaviors for a wide variety of issues. To access the GSS website, go to
sda.berkeley.edu/GSS
using No Weight as the default weight selection.
1. Americans were asked: Is it the government's responsibility to impose strict laws to make industry do less
damage to the environment? Results from both 1996 and 2006 can be found in the GSS.
Type GRNLAWS in Row: and YEAR in Column: then Run the table.
a) Use StatCrunch and the 2006 data to create a 90% confidence interval for the true proportion of all Americans
answering 'definitely should be' to this question. Include a check of the necessary conditions in your answer.
Copy and paste the output from StatCrunch.
Interpret your interval in context.
b)
c)
Can you conclude whether a majority of the population would answer 'definitely should be'? Explain using
your confidence interval.
d)
Is there a difference in the responses from 1996 and 2006? Use the segmented bar graphs to comment.
Transcribed Image Text:The General Social Survey (GSS) is an opinion survey that has been conducted for more than 30 years by the National Opinion Research Center at the University of Chicago. About 2000 adult Americans are given a 90-minute interview asking about opinions and behaviors for a wide variety of issues. To access the GSS website, go to sda.berkeley.edu/GSS using No Weight as the default weight selection. 1. Americans were asked: Is it the government's responsibility to impose strict laws to make industry do less damage to the environment? Results from both 1996 and 2006 can be found in the GSS. Type GRNLAWS in Row: and YEAR in Column: then Run the table. a) Use StatCrunch and the 2006 data to create a 90% confidence interval for the true proportion of all Americans answering 'definitely should be' to this question. Include a check of the necessary conditions in your answer. Copy and paste the output from StatCrunch. Interpret your interval in context. b) c) Can you conclude whether a majority of the population would answer 'definitely should be'? Explain using your confidence interval. d) Is there a difference in the responses from 1996 and 2006? Use the segmented bar graphs to comment.
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