a study n back pain, perform core exercises daily while the other participants perform alternative exercises daily. Back pain is assessed after one month. Child psychologists seek to determine the link between peer pressure and bullying. They conduct a survey of 5000 adolescents asking them how often they have been bullied or have bullied others.
a study n back pain, perform core exercises daily while the other participants perform alternative exercises daily. Back pain is assessed after one month. Child psychologists seek to determine the link between peer pressure and bullying. They conduct a survey of 5000 adolescents asking them how often they have been bullied or have bullied others.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Classify each description as either an observational study or an experiment.
In a study on the effects of core exercise on back pain, some participants are asked to
perform core exercises daily while the other participants perform alternative exercises
daily. Back pain is assessed after one month.
experiment
observational study
Child psychologists seek to determine the link between peer pressure and bullying. They
conduct a survey of 5000 adolescents asking them how often they have been bullied or
have bullied others.
Agricultural scientists seek to test the effects of a new pesticide on corn crops. Half of the
participating farmers are assigned the new pesticide and the other half continue using an
alternative pesticide. The crops are compared after two seasons.
observational study
Random homeowners in a particular city are divided into two groups, those that currently
use solar panels in their homes and those that do not. All participants are surveyed to
determine whether electric bills are lower for those with solar panels.
experiment
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