A power analysis is often used to determine sample size. The use of too many animals (or other experimental units) wastes animals, money, time and effort, and it is unethical. But if too few animals are used the experiment may lack power and miss a scientifically important response to the treatment.
Connecticut â if shift is 7.5 hours, 1/2 hour lunch after first 2 hours but before last 2 hours. Delaware â if shift is 7.5 hours, 1/2 hour lunch after first 2 hours but before last 2 hours. Illinois â required for hotel room attendants only. Kentucky â reasonable meal period between 3rd and 5th hour of shift.
toggle caption iStockphoto. Longer lines in the cafeteria and shorter lunch periods mean many public school students get just 15 minutes to eat. Yet researchers say when kids get less than 20 minutes for lunch, they eat less of everything on their tray. Longer lines in the cafeteria and shorter lunch periods mean many public school students get just 15 minutes to eat.  iStockphoto. Most of the kids in the U.S. don't get much time to eat lunch.