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1) What was the percentage of African American (“Black”) participants in the 2014 survey? (Type in a number between 0.001 to 99.999 without “%”)
2) What was the mean age of the 2014 participants?
Before the calculation, recode the response “89 OR OLDER” to “89”.
3) What was the median family income (in constant dollars) among the 2014 participants?
4) What was the sample variance of the number of hours watching television per day among the 2014 participants?
Sample Solution
5) What was the standard error of the 2014 participants’ average attitude towards question #73:
“There are different opinions as to what it takes to be a good citizen. As far as you are concerned personally on a scale of 1 to 7, where 1 is not at all important and 7 is very important, how important is it to help people in the rest of the world who are worse off than yourself?”
Before calculating anything, recode “NOT AT ALL IMPORTANT” to 1 and “VERY IMPORTANT” to 7.
6)
What was the 99% confidence interval (CI) of the 2004 participants’ average attitude towards question #73:
“There are different opinions as to what it takes to be a good citizen. As far as you are concerned personally on a scale of 1 to 7, where 1 is not at all important and 7 is very important, how important is it to help people in the rest of the world who are worse off than yourself?
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