Manufacturers must employ sample sizes that ensure that packaging systems are safe, meet regulatory requirements, and maintain sterility. Photo courtesy of Beacon Convertors (Saddle Brook, NJ). The ...

Wondering how many people in the United States have a smartphone? If you poll 20 people on the street, your survey won’t be representative of the entire American population. But if you just want to ...

(Portions of this text are reprinted from Dell et al., 2002.) Scientists who intend to use animals in research must justify the number of animals to be used, and committees that review proposals to ...