Wednesday, December 5, 2007

I may not be able to pass the exam but atleast i can have fun doing it

3. Coal is carried from a mine in West Virgina to a power plant in New York in hopper cars on a long train. The Automatic loader is set to dump 36 tons of coal in each car. The actual weights of coal loaded into each car are normally distributed with a mean of 36 and a standard deviation of 0.8 tons

(a) what is the probability that one randomly selected car will have a weight of less than 35.5 tons (include a sketch as part of your answer)?



apparently that wasn't the sketch she was looking for, who knew?

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