document.write( "Question 663733: 3. Assume that a sample is drawn and z(α/2) = 1.65 and σ = 20. Answer the following questions:\r
\n" ); document.write( "\n" ); document.write( "(A) If the Maximum Error of Estimate is 0.04 for this sample, what would be the sample size?
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\n" ); document.write( "(B) Given that the sample Size is 400 with this same z(α/2) and σ, what would be the Maximum Error of Estimate?
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\n" ); document.write( "(C) What happens to the Maximum Error of Estimate as the sample size gets larger?
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\n" ); document.write( "(D) What effect does the answer to C above have to the size of the confidence interval?
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Algebra.Com's Answer #412917 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "90% confidence Interval z(α/2) = 1.65   and SD = 20
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document.write( "ME = 1.65(20/sqrt(n)
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document.write( "sqrt(n) = 1.65*20/.04 = 825 , n^2 = 380,625\r
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document.write( "ME = 1.65*20/sqrt(400) = 1.65
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document.write( "(C) What happens to the Maximum Error of Estimate as the sample size gets larger? ME  gets smaller\r
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document.write( " (D) What effect does the answer to C above have to the size of the confidence interval? gets smaller as well\r
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document.write( "  mean - ME <  < mean + ME\r
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document.write( "Donations on my website are appreciated.  Thanks.  ewatrrr
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document.write( "http://math-is-magical.weebly.com/index.html
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