A two-tailed test is _______ powerful than a one-tailed test if we are sure the difference is in the direction that we would have predicted
a. more
b. less
c. equally
d. We cannot tell.
B
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According to the article on object permanence Now You See It, Now You Don't, what did Piaget hope to
learn with the standard Piagetian conservation task? (a) the child must realize that an object continues to exist when it is out of sight (b) the child realizes that an object retains its size even when its shape is manipulated (c) the child realizes that electricity is conserved best by turning off lights, even though heating and cooling systems use the most energy (d) none of the above
Approximately what percentage of the infants studied in the U.S. display an insecure-resistant attachment style?
A) 5-10 B) 10-15 C) 15-20 D) 20-25
People can relieve the pain of migraine headaches by raising the temperature in a finger
Indicate whether the statement is true or false
When a child receives different forms of a certain gene from his/her parents, he or she is said to be
a) dominant. b) phenotype. c) homozygous. d) heterozygous.