A group of high IQ students are found to have larger brains than a group of low IQ students. From this, we can conclude that
a. IQ is largely determined by genetics and biology.
b. IQ is largely determined by environment.
c. IQ is determined by both genetics and environment.
d. None of the above can be concluded from this finding
D
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Although it may become the leading cause in the near future, which factor currently ranks SECOND as a cause of preventable deaths in the United States?
a. smoking. b. unsafe sexual behavior. c. alcohol abuse. d. being overweight.
In mammals, special feature-detector cells in the visual cortex respond to different visual patterns
Indicate whether this statement is true or false.
Short periods of exposure to 120 decibels
a. usually results in a permanent hearing loss. b. may cause a temporary hearing loss. c. may cause a conductive hearing loss. d. will not result in a hearing loss since this is the level of normal conversation.
Each point on the abscissa of the distribution of sample means represents
a. a parameter b. a statistic c. the sampling error d. the population error