Carl has obtained a sample of 50 high school students in Prince George by listing every high school student in Prince George (i.e., 2000 high school students) and selecting every nth one for his sample. What probability sampling technique is Carl using?

Which woman has had the most typical experience concerning sexual harassment?

a) Angela, who was raped at work by her boss b) Diane, who has been sexually harassed and filed a lawsuit as a result c) Kim, who claims to have been sexually harassed because a fellow employee asked her out repeatedly d) Dana, who has received unwelcome sexual remarks numerous times but never reported the incidents to supervisors

A punisher ________ the probability of a response while a negative reinforcer ________ the probability of a response

a. decreases; decreases b. increases; increases c. decreases; increases d. does not alter; decreases e. increases; decreases