Gun violence Th e Harris Poll asked a sample of 1009
Chapter 9, Problem 9.6(choose chapter or problem)
Gun violence Th e Harris Poll asked a sample of 1009 adults which causes of death they thought would become more common in the future. Gun violence topped the list: 706 members of the sample thought deaths from guns would increase. Although the samples in national polls are not SRSs, they are close enough that our method gives approximately correct confi dence intervals. (a) Say in words what the population proportion p is for this poll. (b) Find a 95% confi dence interval for p. (c) Harris announced a margin of error of plus or minus 3 percentage points for this poll result. How well does your work in (b) agree with this margin of error?
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