document.write( "Question 1178714: The incubation time for Rhode Island red chicks is normally distributed with a mean of 21 days and a standard deviation of approximately 1 day ( based on information from world book encyclopedia). If 1000 eggs are being incubated how many chicks do we expect will hatch:
\n" ); document.write( "1. In 20 to 23, days?
\n" ); document.write( "2. In 19 to 24 days?
\n" ); document.write( "3. In 20 days or fewer?
\n" ); document.write( "4. In more than 20 days?
\n" ); document.write( "5. In less than 20 days and more than 23 days?
\n" ); document.write( "(Assume all eggs eventually hatch). \n" ); document.write( "
Algebra.Com's Answer #808129 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi\r\n" );
document.write( "normally distributed with μ = 21 days and σ = 1  \r\n" );
document.write( "n = 1000\r\n" );
document.write( "Probability:\r\n" );
document.write( "Using a TI calculator 0r similarly a Casio fx-115 ES plus\r\n" );
document.write( "1. In 20 to 23, days? P = normalcdf(20,23,21,1) = .8186x1000 = 818.6 0r 818\r\n" );
document.write( "2. In 19 to 24 days?   P =  normalcdf(19,24,21,1) = .9789x1000 = 978.9 0r 978\r\n" );
document.write( "3. In 20 days or fewer?  normalcdf(-9999, 20,21,1) = .1587 = 158.7 0r 158\r\n" );
document.write( "4. In more than 20 days? 1 - .1587 = .8413 = 841.3 0r 841\r\n" );
document.write( "5. In less than 20 days and more than 23 days? normalcdf(-9999, 23,21,1)=.9772\r\n" );
document.write( " 1 - .9772 = .1238, 123.8 x1000 = 123 rounded down \r\n" );
document.write( " 158 + 123 = \r\n" );
document.write( " the Best in your Studies.\r\n" );
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