When calculating the sample variance of a random sample, you divide the sum of the squared deviations (from the sample mean) by N - 1 instead of N to ensure the estimator achieves what property?
A. Unbiasedness
B. Minimum variance
C. Squared loss
D. Efficiency
Answer: A
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What is the movement of part of one chromosome to another chromosome called?
A) inversion B) duplication C) deletion D) translocation
THC, the active ingredient in marijuana, mimics the function of the neurotransmitter ____, resulting in a variety of
effects including ____.
a. dopamine; increased pain perception b. norepinephrine; hallucinogens c. GABA; nervousness d. serotonin; loss of appetite e. anandamide; memory loss
Why are red algae found in deeper oceanic waters?
A. They are able to utilize the more saline deep water. B. Red algae prefer the warmer deep water. C. Fewer algae predators are found in deeper water. D. They possess pigments that allow them utilize blue-green-light. E. They possess pigments that allow them to utilize red light.
Cholesterol is
a. a dietary essential; the human body cannot synthesize it. b. found in foods of plant origin. c. an important part of human cell membranes and necessary to make some hormones. d. All of the above.