When wants to find the average heights of students in the 11 grade at East high school. So he will use a sample of students in the 11 grade to find the average height

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour