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It's believed that as many as 20% of adults over 50 never graduated from high school. We wish to see if this percentage is the

It's believed that as many as 20% of adults over 50 never graduated from high school. We wish to see if this percentage is the same among the 25 to 30 age group. What sample size would allow us to increase our confidence level to95% while reducing the margin of error to only 5%?

n=

(Round up to the nearestinteger.)

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