Confidence interval for the percent of all adults

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A Gallup Poll found that 51% of people in its sample said "yes" when asked, "Do you think the Canadian justice system is too lenient on repeat offenders." Gallup announced: "For results based on the total sample of national adults, one can say with 95% confidence that the margin of sampling errors is + _ 3 percentage points."

a. What is the 95% confidence interval for the percent of all adults who think the Canadian justice system is too lenient on repeat offenders?

b. What does it mean to say that we have 95% confidence " in this interval?

Reference no: EM132385010

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