document.write( "Question 1173033: Find the minimum sample size n needed to estimate for the given values of​ c,o ​, and E.
\n" ); document.write( "c​=.90,o=7.2 ​,and E=2\r
\n" ); document.write( "\n" ); document.write( "Assume that a preliminary sample has at least 30 members. \n" ); document.write( "
Algebra.Com's Answer #798190 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi, 
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document.write( "c​=.90,o=7.2 ​,and E=2
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document.write( "ME =\"%28+z%2Asigma%29%2Fsqrt%28n%29\"
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document.write( "n = \"%28%281.645%2A7.2%29%2F2%29%5E2%29\"  = 35.07  0r 36 is the sample size needed\r
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document.write( " = CI	z = value
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document.write( "90%	z =1.645
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document.write( "92%	z = 1.751
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document.write( "95%	z = 1.96
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document.write( "98%	z = 2.326
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document.write( "99%	z = 2.576
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