SOLUTION: A random sample of medical files is used to estimate the proportion of all people that have blood type B blood. If you have no preliminary estimate for p how many medical files sho
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Question 761800: A random sample of medical files is used to estimate the proportion of all people that have blood type B blood. If you have no preliminary estimate for p how many medical files should you include in order to be 95% sure the point estimate will be within a distance of .030 from p Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A random sample of medical files is used to estimate the proportion of all people that have blood type B blood. If you have no preliminary estimate for p how many medical files should you include in order to be 95% sure the point estimate will be within a distance of .030 from p
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n = [z/E]^2*pq
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n = [1.96/0.03]^2*(1/2)^2 = 1068 when rounded up
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Cheers,
Stan H.
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