A Researcher Collected Frog and Water Samples from Eight Widely

question 115

Multiple Choice

A researcher collected frog and water samples from eight widely separated sites across the United States and studied the incidence of abnormalities in frogs exposed to different levels of the herbicide atrazine.This was a(n) _______ experiment.

• A) comparative
• B) controlled
• C) inductive
• D) logic
• E) deductive

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Definitions:

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true; used as a threshold for determining the statistical significance of a test result.

Sample Data

A subset of data collected from a larger population, used to make inferences or predictions about the population.

Hypotheses

Propositions or statements made for the purpose of testing through research and experimentation, often predicting a particular relationship between variables.

Chi-square Goodness-of-fit

A statistical test to determine if observed data fits a particular expected distribution.