Chocolate Math A milk chocolate bar made of twelve equal-sized
rectangular pieces has an area of 144 square centimeters.
1.) What are the dimensions
of each rectangular piece?
2.) What is the perimeter
of the whole chocolate bar?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics