A statistically significant difference with the z test means that _____
a. the population mean is larger than the hypothesized sample value
b. the alpha level was higher than expected by chance alone
c. the sample mean comes from a population with a mean different from the
hypothesized population value
d. the alpha level was lower than expected by chance alone
Information; p 167, E, 2
C
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The KE family is remarkable in that their speech disorder has been linked to
A) a single gene on chromosome 7. B) abnormal neural development of the posterior association cortex. C) abnormal neural development of the right frontal cortex. D) the use of recreational drugs such as cocaine and alcohol. E) a single gene on chromosome 21.
Cell bodies of motor neurons would most likely be found in ____
a. gray matter b. white matter c. the dorsal roots d. the tracts