document.write( "Question 1178987: Find the minimum sample size n needed to estimate μ for the given values of​ c, σ​, and E.
\n" ); document.write( "c=0.98​, σ=9.1​, and E=2
\n" ); document.write( "Assume that a preliminary sample has at least 30 members.
\n" ); document.write( "n= \n" ); document.write( "
Algebra.Com's Answer #808523 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi\r\n" );
document.write( "c=0.98​, σ=9.1​, and E=2\r\n" );
document.write( "Assume that a preliminary sample has at least 30 members: z(.98 CI) = 2.326\r\n" );
document.write( "\"z+=blue+%28x+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29+=+sqrt%28n%29%28ME%29%2Fblue%28sigma%29\"  OR  n = \"%28z%2Ablue%28sigma%29%2FME%29%5E2\"\r\n" );
document.write( " n = (2.326*9.1/2)^2 = 103.5  \r\n" );
document.write( "minimum sample size n needed:  104\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
document.write( " = CI	z = value\r\n" );
document.write( "90%	z =1.645\r\n" );
document.write( "92%	z = 1.751\r\n" );
document.write( "95%	z = 1.96\r\n" );
document.write( "98%	z = 2.326\r\n" );
document.write( "99%	z = 2.576\r\n" );
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