Need help on this question asap please

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

Which statement about the annual percentage rate (apr) is not true?

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?