Examlex
A sample of 16 students showed that the variance in the number of hours they spend studying is 25. At a 5% level of significance, test to see if the variance of the population is significantly different from 30.
Homo Sapiens
The species of bipedal primates to which modern humans belong, characterized by a brain capable of complex reasoning, language, and the creation of art.
Fossil Record
A chronological collection of life's remains in sedimentary rocks, allowing scientists to understand the evolution of life on Earth.
Duck-Billed Platypuses
A semi-aquatic mammal endemic to eastern Australia, including Tasmania, unique for its duck-bill, webbed feet, and egg-laying capability.
Mammals
Warm-blooded vertebrate animals with hair or fur, females producing milk for their young.
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