document.write( "Question 1021458: The daily demand for petrol at a garage is normally distributed with a mean of 20000 litres and a standard deviation of 7200 litres .what is the probability that the demand in any one day is greater than 25000 litres \n" ); document.write( "
Algebra.Com's Answer #637238 by Boreal(15235)\"\" \"About 
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z=(x-mean)/sd
\n" ); document.write( "z>(25000-20000)/7200
\n" ); document.write( "z>(5000/7200)=0.6944
\n" ); document.write( "probability is 0.2437
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