The weight of potato chips in a medium-sized bag is state to be 12 ounces. the amount that the packaging machine puts in these bags is believed to...

The weight of potato chips in a medium-sized bag is state to be 12 ounces. the amount that the packaging machine puts in these bags is believed to have a normal model with a mean 12.1 ounces and standard deviation .09 ounces.

some of the chips are sold in bargain packs of 5 bags. what is the probability that none of the 5 is underweight?