Question
Satisfied? A 2010 poll asked people of a certain region whether they were satisfied with their financial situation. A total of 341 out of 829
Satisfied?A 2010 poll asked people of a certain region whether they were satisfied with their financial situation. A total of 341 out of 829
people said they were satisfied. The same question was asked in 2012 and 302 out of 1160
people said they were satisfied.
Part 1 of 2
(a) Construct an 80% confidence interval for the difference between the proportions of adults who said they were satisfied in 2012 and 2010
. Let p1 denote the proportion of adults who said they were satisfied in 2010 and let p2 denote the proportion of adults who said they were satisfied in 2012
. Use the TI-84 Plus calculator and round the answers to three decimal places.
An 80% confidence interval for the difference between the proportions of adults who said they were satisfied in 2012 and 2010 is <p1- p2< . |
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