Concept explainers
(a)
To find: The objective, identify the population, experimental and control group and a sample procedure of the given experiment.
(a)
Answer to Problem 24PPS
The objective, identify the population, experimental and control group and a sample procedure are given below.
Explanation of Solution
Step 1:
State the objective and identify the population.
The objective of the experiment is to determine whether a mixture of lemon juice and salt will remove copper oxides from pennies. The population is thirty dull pennies.
Step 2:
Determine the experimental and the control group.
The experimental group is the group that are copper dull pennies and the control group is the group of bright copper pennies.
Step 3:
Describe a sample procedure.
Measure the shades of both the groups and then use the mixture on the experimental group. Then wait for some time and measure the shade again and compare the shade for each group to see if the claim was valid.
(b)
To find: The factors should be considered when selecting pennies for the experiments.
(b)
Answer to Problem 24PPS
The factors explained below.
Explanation of Solution
One factor to consider is the year when the coins are made (they made be the same year) to avoid bias towards newer or older coins.
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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