The mean of a function of a random variable(s) for a given sample is known as a(n):
A. unbiased coefficient estimates.
B. sample moment.
C. regression line.
D. heteroskedasticity.
Answer: B
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According to the first law of thermodynamics, ____
a. matter can be created and destroyed b. matter only changes forms c. energy can be created and destroyed d. energy only changes forms e. matter and energy can be interconverted
Rosalind Franklin created the first ____
a. clear x-ray diffraction image of DNA is it occurs in cells b. model of DNA’s nucleotide bases c. experiment to test whether base-pairs differ among species d. hypothesis surrounding the nature of a hereditary molecule e. results proving that bases exist on the outside of a helix
Balanced polymorphism can be maintained by the combined actions of:
a. the founder effect and genetic drift. b. heterozygote advantage and genetic drift. c. heterozygote advantage and the founder effect. d. frequency-dependent selection and the founder effect. e. heterozygote advantage and frequency-dependent selection
Archaea are composed of ________ cells
A) prokaryotic B) bacterial C) eukaryotic D) animal