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?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.1: Ratios And Rates
Problem 40E
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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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