Whenever the mean of the distribution of differences equals zero, then one
can be fairly safe in concluding that
a. the samples probably represent a single population
b. the samples probably represent different populations
c. there was absolutely no sampling error
d. none of these, since the mean can never equal zero
Question 2
If the mean of the distribution of differences were to equal -6.00, this
would indicate that
a. the standard deviation of the distribution is a function of the range
b. the samples probably represent different populations
c. the samples were probably selected from a single population
d. none of these, since the mean can never be negative
Winter distribution of the American crow, Corvus brachyrynchos.
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Normal and sickle-cell hemoglobin. (a) Subtle differences between the conformations of hemoglobin A
Functionalist and Conflict Views of Stratification: The Distribution of Society's Resources
An example of the sometimes drastic differences in placarding regulations in the United States ...
Distribution of Crust Remaining from Archean and Proterozoic