Question
4. The Kaiser Family Foundation polled 1294 residents of Orleans Parish in New Orleans in 2008 and found that 41% of the residents who had
4. The Kaiser Family Foundation polled 1294 residents of Orleans Parish in New Orleans in 2008 and found that 41% of the residents who had lived through Hurricane Katrina in 2005 report that their lives are still disrupted2.
a. The poll surveyed 1294 people. We need to find approximate margin of error for a 95% confidence interval?
b. The poll of 1294 people found that 41% of respondents still had disrupted lives. Can we conclude with certainty that no more than 45% of residents' lives are still disrupted, please show justification?
c. Supposing instead that the poll of 1294 people had found that 52% still had disrupted lives. Explain what we could conclude from this result. Could we assert with confidence that a majority of residents' lives are still disrupted by Katrina?
d. Supposing we wish to have a margin of error of two percentage points. Approximately how many people should we interview?
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