A sample is selected from a population with a mean of µ = 40 . If the sample mean is M= 45, which of the following combinations would make the sample mean a good, representative value for the population?
a. A small sample and a small population standard deviation
b. A small sample and a large population standard deviation
c. A large sample and a small population standard deviation
d. A large sample and a large population standard deviation
D
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Individuals with Anorexia Nervosa:
a. Stop eating because of an abnormal increase in blood sugar that alters their perceptions of hunger. b. Fear gaining weight so much that they stop eating. c. Have lost their appetite, leading them to stop eating. d. Stop eating but do not lose weight.
A search for the happiness center in the brain is unlikely to be successful because ____
a. brain areas associated with particular emotions vary considerably b. happiness is only an epiphenomenon c. fear activates brain areas identical to those of happiness d. no one has been able to define happiness
Barbara fails a major exam in her economics class. She tells herself that she wouldn't have performed as poorly as she did if she hadn't gotten stuck in traffic on her way to the exam, which made her late. This makes her feel less upset and anxious about her exam performance. To deal with the anxiety created by her poor performance on the exam, Barbara appears to be using:
a. rationalization b. displacement c. projection d. repression
The best guess as to what percentage of convictions are errors is
A. 0.1%. B. 0.5%. C. 1%. D. 5%.