The World Values Survey (www.worldvaluessurvey.org) is administered periodically to random samples from societies around the globe. Listed below are the number of respondents in each nation who said they are "very happy." Compute sample proportions and then construct confidence interval estimates for each nation at the 95% level.

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Number "Very Sample Confidence Nation Great Britain 2006 528 Japan Brazil China Malaysia Mali Russia Year Happy" Size Interval 2005 311 2006 510 2007 424 2006 428 2007 598 2006 214 1041 1096 1500 2015 1201 1534 2033