SOLUTION: A recent quality control test at a chocolate bar factory finds that the mass of the chocolate bars appear to be normally distributed with a mean mass of 52g and a standard deviatio

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Question 1083291: A recent quality control test at a chocolate bar factory finds that the mass of the chocolate bars appear to be normally distributed with a mean mass of 52g and a standard deviation of 1.02g. What percentage of chocolate bars are between 49.96g and 53.02g?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z value= (x-mean)/sd
=49.96-52/1.02=-2
=(53.02-52)/1.02=+1
probability is 0.8186, or 81.86%