SOLUTION: Given a level of confidence of 95% and a population standard deviation of 9, answer: A). What other information is necessary to find the sample size of (n)? B). Find the Maximu

Question 385047: Given a level of confidence of 95% and a population standard deviation of 9, answer:
A). What other information is necessary to find the sample size of (n)?
B). Find the Maximum Error of Estimate (E) if n = 56. Show all calculations.

**I did not do that well on a test. Can someone please help me to understand this?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Given a level of confidence of 95% and a population standard deviation of 9, answer:
A). What other information is necessary to find the sample size of (n)?
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n = [z*s/E]^2
Need "E", which is the allowed error.
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B). Find the Maximum Error of Estimate (E) if n = 56. Show all calculations
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Error = z*s/sqrt(n)
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E = 1.96*9/sqrt(56)
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Cheers,
Stan H.
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