1. A researcher is interested in the effect of an electrolytic sports drink on the endurance of adolescent boys. A group of 30 boys is selected and half are given a treadmill endurance test while consuming the sports drink and the other half take the test while drinking water. For this study, what is the population? 2. A researcher is interested in the relationship between caffeine consumption and activity level for elementary school children. A sample of 20 children is obtained and each child is interviewed to determine a level of caffeine consumption. The researcher then records the level of activity for each child during a 30-minute session on the playground. Is this an experimental or correlational study? Explain your answer. 3. Use summation notation to express the following calculation: Add 1 point to each score and square the result, then add the squared values.
1. A researcher is interested in the effect of an electrolytic sports drink on the endurance of adolescent boys. A group of 30 boys is selected and half are given a treadmill endurance test while consuming the sports drink and the other half take the test while drinking water. For this study, what is the population?
2. A researcher is interested in the relationship between caffeine consumption and activity level for elementary school children. A sample of 20 children is obtained and each child is interviewed to determine a level of caffeine consumption. The researcher then records the level of activity for each child during a 30-minute session on the playground. Is this an experimental or correlational study? Explain your answer.
3. Use summation notation to express the following calculation:
Add 1 point to each score and square the result, then add the squared values.
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