document.write( "Question 610414: A normal population has a mean of 80.0 and a standard deviation of 14.0.\r
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\n" ); document.write( "Compute the probability of a value75.0 or less.
\n" ); document.write( "Compute the probability of a valuebetween 55.0 and 70.0.
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Algebra.Com's Answer #384399 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( "HIghly  Recommend getting familiar with TI Calculator OR Excel functions/Stat tool 
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document.write( "OR the use of various websites for your statistical calculations:Stattrek.com,  easycalculation.com  ..etc
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document.write( " ___________________________________________________________________________
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document.write( "A normal population has a mean of 80.0 and a standard deviation of 14.0.
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document.write( "Compute the probability of a valuebetween 75.0 and 90.0.
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document.write( "     P( (90-80)/14 > z >(75-80)/14) =NORMSDIST(10/14) -NORMSDIST(-5/14) = .76 - .36= .40
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document.write( " Compute the probability of a value 75.0 or less.
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document.write( "     P(z < (75-80)/14) = NORMSDIST(-5/14) = .36
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document.write( " Compute the probability of a value between 55.0 and 70.0. 
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document.write( "       P( (55-80)/14 < z <(70-80)/14) =NORMSDIST(-10/14)- NORMSDIST(-25/14) = .24- .04= .20 \n" );
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