Posted by steven on Wednesday, April 14, 2010 at 10:27pm.
at the census bureau web site you can find the percent of adults in each state who have at least a bachelors degree. it makes no sense to find the mean for these data and use it to get a confidence interval for the mean percent U in all 50 states. Why not?

statistics  drwls, Thursday, April 15, 2010 at 5:02am
The fraction of people with a college degree in all states would require a WEIGHTED mean of the individual state averages, with the weighting done by population. The populations of states vary by a large factor. California has 50 times more people than North Dakota, for example.
Answer This Question
Related Questions
 Statistics  At the Statistics Canada Web site, you can find the percent of ...
 math  At the Statistics Canada Web site, you can find the percent of adults in ...
 math statistics/probability  can anyone show me how to work this problem out ...
 IT/205  Read “The U.S. Census Bureau Field Data Collection Project: Don’t Count...
 math  can anyone show me how to work this problem out thanks in advance The ...
 Statistics  The body temperatures of adults are normally distributed with a ...
 statistics  One of nature's patterns connects the percent of adult birds in a ...
 stats  This week we practice with Binomial Distribution. You can use Appendix ...
 help me  Complete the matrix in Appendix E using information from the Asian ...
 statistics  assume adults have an IQ score that are normally distrubted with a ...
More Related Questions