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In a poll 37% of the people polled answered 'yes' to the question "are you in favor of the death penalty for a person convicted of murder?" The margin of error in the poll was 3% and the estimate was made with 96% confidence
In a poll 37% of the people polled answered 'yes' to the question "are you in favor of the death penalty for a person convicted of murder?" The margin of error in the poll was 3% and the estimate was made with 96% confidence.
At least how many people were surveyed?
By how many times does the sample size have to be increased to decrease the margin of error by a factor of 1/7?
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