The experimenter usually sets the value of
a. the independent variable.
b. the dependent variable.
c. all the extraneous variables.
d. none of the variables in the experiment.
A
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In the United States, the average life expectancy to birth is currently about _____ years
a. 72 b. 79 c. 84 d. 90
A person states that the reason people in some professions, such as teachers, lawyers, or doctors, seem so much alike is because their work requires that they act in particular ways. This person believes that the behavior of these professionals is strongly influenced by
a. personality traits. b. external situations. c. lasting biological predispositions. d. ego defense mechanisms.
The more repetitions of ___ beyond ___ determine the age of onset of the symptoms of Huntington's
a. cytosine, adenine, and guanine; 37 b. cytosine, adenine, and uracil; 37 c. adenine, uracil, and guanine; 30 d. cytosine, adenine, and guanine; 10 e. adenine, thymine, and guanine; 34
Approximately __________% of obese children remain overweight as adults
a) 40 b) 55 c) 75 d) 80