Suppose that one day you get an e-mail from one of your friends suggesting you download and install a new game she found online. you download, install, and play the game. without your knowledge, the game forwards a recommendation to download and install the game to all of your e-mail contacts. without any outward sign, each instance of the game is part of a malicious attempt to flood a government website so that it crashes. what type of virus is on your computer?

a companion virus

a polymorphic virus

a boot sector virus

a sharing virus

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.