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Biology - Science for Life - With Physiology by C. Belk, V. Maier

By C. Belk, V. Maier

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2 Hypothesis Testing 8 for testing ideas is simple and universal to all areas of science. 5 Is There a Cure for the Common Cold? 24 standing of this process can help you evaluate information about many warming, to the origin of life and the universe—with more confidence. In this the question we’ve considered here: Is there a cure for the common cold? 1 The Process of Science The term science can refer to a body of knowledge—for example, the science of biology is the study of living organisms. You may believe that science requires near-perfect recall of specific sets of facts about the world.

In the echinacea tea experiment just described, members of both the experimental and control groups were female employees of a nursing home who sought relief from their colds at their employer’s clinic. The volunteers were randomly assigned into either the experimental or control group as they came into the clinic. Stop & Stretch In the echinacea tea experiment, a nonrandom assignment scheme might have put the first 25 visitors to the clinic in the control group and the next 25 in the experimental group.

Ideas about “how things work” are called hypotheses. Or, more formally, a hypothesis is a proposed explanation for one or more observations. 1). When your mom tells you to dress warmly to avoid colds, she is basing her advice on the following hypothesis: Becoming chilled makes you more susceptible to illness. The hallmark of science is that hypotheses are subject to rigorous testing. Therefore, scientific hypotheses must be testable—it must be possible to evaluate a hypothesis through observations of the measurable universe.

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