For a random variable that can take values from zero to 10, what would be the maximum sample variance that could be observed from a sample of two observations?
A. 0
B. 50
C. 100
D. Not enough information to be determined.
Answer: B
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Which of the following is an example of acclimatization?
A. sweating while working out B. a dog moving into the shade C. a dog panting on a hot day D. young penguins huddling together to stay warm E. a duck growing thick down underfeathers in fall
Any organism that can cause disease in the host after direct interaction is a(n)
A. secondary pathogen. B. focal pathogen. C. opportunistic pathogen. D. primary pathogen.
Which is not correct about Mycobacterium species?
A. It is an acid-fast bacterium. B. Cells appear as long, slender rods via microscopy. C. All species are human pathogens. D. It exhibits a very slow growth rate. E. Cell walls have waxy lipids.
A base-pair substitution may alter a protein by changing an amino acid or by introducing a(n)
_____________________. Fill in the blank(s) with the appropriate word(s).