in an experiment when neither the participants nor the researchers know who belongs to the control group and who belongs to the experimental group. Only after all the data have been recorded (and in some cases, analyzed) do the researchers learn which individuals are which.
A. Single-blind procedure
B. Inferential statistics
C. Double-blind procedure
D. Measure of central tendency
Select your answer:
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Embryology › ViewHow is comparative embryology used as evidence for evolution?
A. The similarities in development across organisms show how they are related.
B. The development of embryos shows evolution occurring in organisms before birth.
C. The similarities of embryos shows that all organisms used to once look like each other.
D. Comparative embryology is not used as evidence for evolution.
Bacteria & Viruses › View
The graph represents the results of an investigation of the growth of three identical bacterial cultures incubated at different temperatures. Which inference can be made from this graph?
A. Temperature is unrelated to the reproductive rate of bacteria
B. Bacteria cannot grow at a temperature of 5°C.
C. Life activities in bacteria slow down at high temperatures.
D. Refrigeration will most likely slow the growth of these bacteria.