The weights of the contents of cans of tomato sauce produced by a company are normally distributed with a mean of 8 ounces and a standard deviation of 0.2 ounces. a)What percentage of all cans...

The weights of the contents of cans of tomato sauce produced by a company are normally distributed with a mean of 8 ounces and a standard deviation of 0.2 ounces.

a)What percentage of all cans produced contain more than 8.4 ounces of tomato paste?

b)What percentage of all cans produced contain less than 7.8 ounces?

c)What percentage of cans contains between 7.4 and 8.2 ounces?

d)Ninety-five percent of cans will contain at least how many ounces?

P.S.  Just answer the question（d）！