The weight of potato chips in a small-size bag is stated to be 6 ounces. The amount that the packaging machine puts in these bags is believed to have a normal model with a mean of 6.1 ounces and a standard deviation of 0.09 ounces.

b) Some of the chips are sold in"bargain packs" of 3 bags.What's the probability that none of the 3 isunderweight?

0.1333.

b) The probability that none of the 3 bags is underweight is

nothing