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2. A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. All 10 members of the music group could lift the barbell, but only 7 members of the no music group could lift the barbell. She concludes that her hypothesis was correct and decides to always play music for her clients. • What was the personal trainer's hypothesis? What was the independent variable? • • • What was the dependent variable? Which group was the control group and which group was the experimental group? • Was the personal trainer's hypothesis correct? Explain why or why not. • How could her experiment be improved?

2. A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. All 10 members of the music group could lift the barbell, but only 7 members of the no music group could lift the barbell. She concludes that her hypothesis was correct and decides to always play music for her clients. • What was the personal trainer's hypothesis? What was the independent variable? • • • What was the dependent variable? Which group was the control group and which group was the experimental group? • Was the personal trainer's hypothesis correct? Explain why or why not. • How could her experiment be improved?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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2. A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. All 10 members of the music group could lift the barbell, but only 7 members of the no music group could lift the barbell. She concludes that her hypothesis was correct and decides to always play music for her clients. • • • • Was the personal trainer's hypothesis correct? Explain why or why not. How could her experiment be improved? What was the personal trainer's hypothesis? What was the independent variable? . What was the dependent variable? Which group was the control group and which group was the experimental group?
Transcribed Image Text:2. A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. All 10 members of the music group could lift the barbell, but only 7 members of the no music group could lift the barbell. She concludes that her hypothesis was correct and decides to always play music for her clients. • • • • Was the personal trainer's hypothesis correct? Explain why or why not. How could her experiment be improved? What was the personal trainer's hypothesis? What was the independent variable? . What was the dependent variable? Which group was the control group and which group was the experimental group?
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