Avolunteer has 12 pounds of bird seed to put in bird theaters in all of the city parks. there are 3 1/4 cups of bird seed in a pound and each birdfeeder a hold about 3/4 cup of bird seed. how many birdfeeders can the volunteer feel completely

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