The General Social Survey asks respondents to rate their political views on a seven-point scale, where 1 = extremely liberal, 4 = moderate, and 7 = extremely conservative. A researcher analyzing data from the 2008 GSS obtains MINITAB output:

a. Show how to construct the confidence interval from the other information provided.
b. Can you conclude that the population mean is higher than the moderate score of 4.0? Explain.
c. Would the confidence interval be wider, or narrower?
(i) If you constructed a 99% confidence interval and
(ii) If n = 500 instead of 1933?

Transcribed Image Text:

Variable NMean StDev SE Mean POLVIERS 1933 4.1128 1.4327 0.0326 (4.0489, 4.1767) 95% CI