Construct and interpret a 99 confidence interval for the, Ask an Expert

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A gallup poll asked a sample of canadian adults if they thought the law should allow doctors to end the life of a patient who is in great pain and near death if the patient makes a request in writing. The poll included 270 people in quebec, 221 of whom agreed that doctor-assisted suicide should be allowed.

What is the margin of error for a 99% confidence interval for the proportion of all quebec adults who would allow doctor assisted suicide?

Construct and interpret a 99% confidence interval for the proportion of all quebec adults who would allow doctor assisted suicide.

How large a sample is needed to get the common +/= 3 percentage points margin of error?

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