If victor were to put apples in bags so that there were 2 kg in each, then he would use 9 more bags than if he were to place 3 kg of apples in each bag. how many kg of apples were there?

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