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) You can put this solution on YOUR website! 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 \n" ); document.write( " |