Concept explainers
To find: Whether the given situation describes a survey, an experiment, or an observational study.
Explanation of Solution
Given information:
The given situation is about engineering.
Concept used:
Survey: In a survey, data are collected from the responses given by members of a population regarding their characteristics, behaviours, or opinions.
Experiment: In an experiment, the sample is divided into two groups:
- An experiment group that undergoes a change, and
- A control group that does not undergoes the change.
Observational study: In an observational study, members of a sample are measures or observed without being affected by the study.
In the given situation, 50 metal samples are tested to determine whether a new titanium alloy has a higher strength than the different alloy, so as per the definition of the experiment, the given situation is an experiment.
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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