When researchers want to estimate the national crime rate, why do they ask only several thousand persons about their experiences with crime?

a) Only some people will take the time to answer such a survey.
b) These people live in New York City and will give high estimates.
c) The people surveyed are a representative sample of the population.
d) The people who are most affected by crime are selected for the survey.


ANS: c

Psychology

You might also like to view...

Young children know their own gender at __________ years of age. They realize that their gender does not change by ages __________.

A. one to two; two to three B. one to two; three to four C. two to three; three to four D. two to three; four to five

Psychology

One sample has M = 18 and a second sample has M = 14 . If the pooled variance for the two samples is 16, what is the value of Cohen's d?

a. 0.25 b. 0.50 c. 1.00 d. Cannot be determined with the information given

Psychology

Which of the following chemicals has been found to play a crucial role in our need for sleep?

a. atropine b. adenosine c. prednisone d. thyroxin

Psychology

Toby knew he needed to go by the pharmacy before it closed today, a(n) ______ memory; he also knew he needed the medicine to treat his eczema, a(n) ______ memory.

a. retrospective; prospective b. prospective; retrospective c. episodic; semantic d. short-term; long-term

Psychology