Achieve for What Is Life? A Guide to Biology with Physiology (2-Term Access)
5th Edition
ISBN: 9781319360733
Author: PHELAN
Publisher: W. H. Freeman
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Chapter 1, Problem 9MC
Summary Introduction
Introduction:
Statistical analyses are mathematical tools that help understand patterns in the study data.
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Which of the following statements is most accurate regarding inference?
A. inference can be used along with observation to form conclusions
B. inference should never be used to gain any kind of knowledge
C. inference makes no assumptions
D. inference should not be used in scientific work
E. inference is a type of observation
In science, a theory is best defined as a(n)
Select one:
a. educated opinion about the natural world.
b. explanation for a large number of findings in the natural world.
c. personal understanding of natural laws.
d. testable prediction about the natural world.
e. speculation and opinion of facts.
In an experiment, the control group is used to:
a
Change the variable
b
Provide a baseline for comparison with the test group
c
add additional non-dependent variables
d
demonstrate correlation rather than causation
e
generate hypotheses
Chapter 1 Solutions
Achieve for What Is Life? A Guide to Biology with Physiology (2-Term Access)
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- Use the computed values for referencearrow_forwardThe purpose of the constant is to: a. allow for adjustment of the control b. eliminate other potential factors/variables in the experiment c. allow for the dependent variable to show the necessary outcome d. help prove the hypothesis correctarrow_forward1) Chi-square analysis generates a p value, an important indicator of statistical support for a hypothetical outcome. If a p value = 0.05 > p > 0.01, the tested hypothesis fails to be falsified. Agree/Disagree? Answer with explanation here:arrow_forward
- The _______ is manipulated by scientists over the course of an experiment. A.)dependent • variable B.)data C.)independent variablearrow_forwardFormulate three (3) hypotheses.Hypothesis: cause and effect/premise and prediction - ”If..then..” statements Example: “If the glass is tapped, then the fish will swim away” There are four evaluation criteria that a hypothesis must meet. First, it must state an expected relationship between variables. Second, it must be testable and falsifiable; researchers must be able to test whether a hypothesis is true or false. Third, it should be consistent with the existing body of knowledge. Finally, it should be stated as simply and concisely as possible.arrow_forwardWhich of the following is NOT a reason why Wakefield’s study on the connection between autism and vaccinations was flawed? A. the study had a small sample size B. the study was not replicable C. the study acquired samples unethically and, quite possibly, illegally D. the study demonstrated everyone’s well being was taken care of E. the authors committed deliberate fraud to support their hypothesisarrow_forward
- Why the results of the Swan-neck flask experiment were reliable ?: Select one: a. Because it maintained no controls at all b. Because proper controls were maintained and only one variable changed at a time c. Because many controls were maintained d. Because it was repeatedly done by several scientists e. Because it tested all variables at the same timearrow_forwardHow do scientists use both inference and directly observed evidence to test hypotheses and develop theories? What is their relative importance?arrow_forwardhelp and explainarrow_forward
- What was the independent variable in the experiment? A.) Temperature B.) Seed count C.)Amount of water D.) Incubation timearrow_forwardHow do scientists derive testable hypotheses? Explain with an example?arrow_forwardA hypothesis cannot be formed without which of the following? a. experimentation b. observation c. datad. theoryarrow_forward
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