Posted by Kath on .
The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have
a) Between 200 and 220 calories
b) Less than 200 calories

math 
Reiny,
Time for one of my favourite wepsites
http://davidmlane.com/normal.html
just plug in 
math 
Anonymous,
The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have
a) Between 200 and 220 calories
b) Less than 200 calories