The length of the Mississippi River is 3730 km. What is the scale of the map if the length of the Mississippi River is 37.3 cm. ( 1 km=1000m, 1m=100 cm).

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