The difference in mean scores on a test of world knowledge for 41 FOXNews viewers and 41 CNN viewers was, tobs = 2.54. If ? = .05 and H1: ?1 – ?2 ? 0, then ______.
a. we’ve made a Type I error
b. we retain the null hypothesis
c. the result is not statistically significant
d. the result is statistically significant
Ans: D
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During the alarm stage of the general adaptation syndrome, __________.
A. the central and somatic nervous systems are activated B. the somatic nervous system activates to send messages from the CNS to muscles C. the sympathetic nervous system is activated and adrenal glands release hormones D. neurotransmitter levels and the central nervous system are activated
While conducting his research, Ebbinghaus used ____
a. ?a single subject b. ?fewer than 10 subjects at a time c. ?a method to "erase" memories d. ?over 1,000 subjects e. ?a laboratory to systematically test 20 subjects at a time
The left and right hemispheres communicate mainly through the:
Prenatal development refers to development of
a. the social bond of the adult couple. b. the newborn immediately after the birth. c. the offspring during pregnancy, from conception until birth. d. plans to become pregnant.