An orange juice producer buys all his oranges from a large orange orchard. The amount of juice squeezed from each of these oranges is approximately normally distributed with a mean of 70 millilitres and a standard deviation of 8 millilitres.What is the probability a randomly selected orange will contain
a)between 62 and 73 millilitres
b)between 72 and 78 millilitres
c)75% of the orange will contain at least how many millilitres of juice
July 6th 2011, 01:39 PM
What have you tried here?
Have you transformed your information into a z-score?