SOLUTION: 120 students were selected among all those at college number 1. 30 of them are sophomores. Find the margin of error

Question 567302: 120 students were selected among all those at college number 1. 30 of them are sophomores. Find the margin of error
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
120 students were selected among all those at college number 1. 30 of them are sophomores. Find the margin of error
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Comment: I guess you are say that 0.30 of them are sophomores.
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Assuming you want 95% confidence you get:
ME: z*sqrt[pq/n] = 1.96*sqrt[0.3*0.7/120] = 0.0820
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cheers,
Stan H.
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