Concept explainers
a.
To find: If the problem is about the comparison of means or proportions.
a.
Answer to Problem 3E
Comparing means.
Explanation of Solution
Given:
50 teenagers have been selected for a study to check if they earn higher when someone cheer them up or when they play alone. They have been divided in two groups.
In this case, the scores of the players are being recorded and it is known that scores are quantitative values. Using this data, the average score earned by each player could be computed and could be used for making comparison. Thus, it could be concluded that the problem is about the proportion.
b.
To find: The type of design that is being used in the study.
b.
Answer to Problem 3E
Experiment.
Explanation of Solution
A study in which an experimenter or researchers controls the condition is known as the experimental study. In this case, the supporters have been assigned deliberately to check its effect on the score of the player.
Thus, the provided study is an experiment
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
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