Graduation its believed that as many as 25 of adults over, Ask an Expert

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Graduation. It's believed that as many as 25% 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.

a) How many of this younger age group must we survey in order to estimate the proportion of non-grads to within 6% with 90% confidence?

b) Suppose we want to cut the margin of error to 4%. What's the necessary sample size?

c) What sample size would produce a margin of error of 3%?

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92191606

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