Use the following
In a survey conducted by the Gallup organization September 6-9, 2012, 1,017 adults were asked "In general, how much trust and confidence do you have in the mass media - such as newspapers, TV, and radio - when it comes to reporting the news fully, accurately, and fairly?"
Of the 1,017 respondents, 214 said they had "no confidence at all."
-What sample size is needed to reduce the margin of error to 1%?

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The Answer of Use the following
In a survey conducted by the Gallup organization September 6-9, 2012, 1,017 adults were asked "In general, how much trust and confidence do you have in the mass media - such as newspapers, TV, and radio - when it comes to reporting the news fully, accurately, and fairly?"
Of the 1,017 respondents, 214 said they had "no confidence at all."
-What sample size is needed to reduce the margin of error to 1%?

Use the Following In a Survey Conducted by the Gallup Organization September 6-9