A sampling distribution of means for samples of students taking the SAT exam has a population mean of 500 and a standard error of 200 . What proportion of sample means would fall between the population mean and a sample mean of 800?
a. 0.5000 c. 0.1915
b. 0.3413 d. 0.4332
D
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In which condition is a person most likely to carefully evaluate a persuasive message?
a. When the message is consistent with what they already believe b. When the message is inconsistent with what they already believe c. When the message is irrelevant to what they already believe d. When they are distracted and the message is not particularly meaningful e. When they are highly motivated and they have the skills to evaluate the message
Regarding short-term memory (STM), which of the following statements is TRUE?
a. STM has an unlimited storage capacity and can hold information for at least 30 minutes. b. It is very difficult to do more than one task at a time in STM. c. Unlike long-term memory, STM is rarely affected by interruption or displacement. d. Once information is placed in STM, it is permanently stored.
Why do researchers believe color deficiencies often have genetic causes?
a) Dietary patterns affect color deficiencies. b) More males than females exhibit color deficiencies. c) Color perception changes somewhat as we get older. d) Color deficiencies are more common in some cultures.
Between the 1950s and 1990s, the mental hospital population
across the United States has ______. a. increased dramatically b. remained relatively the same c. increased the number of female patients while decreasing the number of male patients d. decreased dramatically