SOLUTION: In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The standard deviation of the sample propotio

Algebra ->  Probability-and-statistics -> SOLUTION: In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The standard deviation of the sample propotio      Log On


   

Question 242130: In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The standard deviation of the sample propotion is known as the standard error of the proportion is approximately
Answer by stanbon(75887) About Me  (Show Source):
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In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The standard deviation of the sample propotion is known as the standard error of the proportion is approximately
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standard deviation = sqrt[p*q/n]
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= sqrt[0.4*0.6/80]
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= sqrt[0.003]
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= 0.05478...
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Cheers,
Stan H.