Classify each describtion

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
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Classify each describtion. 

Classify each description as either an observational study or an experiment.
A scientist seeks to test the ability of a new glove to retain heat. The glove is randomly
placed on one hand of each participant, and an older model of the same product is placed
on the other hand.
A political scientist seeks to determine if women between the ages of 25 and 30 are more
likely than men of the same age to vote for a Democratic candidate. The scientist selects a
sample of voters from this age group to survey their political preference.
..... .....
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.
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.
Transcribed Image Text:Classify each description as either an observational study or an experiment. A scientist seeks to test the ability of a new glove to retain heat. The glove is randomly placed on one hand of each participant, and an older model of the same product is placed on the other hand. A political scientist seeks to determine if women between the ages of 25 and 30 are more likely than men of the same age to vote for a Democratic candidate. The scientist selects a sample of voters from this age group to survey their political preference. ..... ..... 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. 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.
A cancer study began by surveying male patients between the ages of 35 and 55 at a local
hospital about their exercise routine. The health of these men is tracked over 10 years to
determine the effect of exercise on lowering the risk of cancer.
Researchers studying how exercise affects cholesterol sample 50 people who exercise
regularly and 50 who do not. Blood was drawn from each person and serum cholesterol
was measured.
Answer Bank
experiment
observational study
Transcribed Image Text:A cancer study began by surveying male patients between the ages of 35 and 55 at a local hospital about their exercise routine. The health of these men is tracked over 10 years to determine the effect of exercise on lowering the risk of cancer. Researchers studying how exercise affects cholesterol sample 50 people who exercise regularly and 50 who do not. Blood was drawn from each person and serum cholesterol was measured. Answer Bank experiment observational study
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