MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A regression was run to determine if there is a relationship between hours of TV watched per day (x) and
the number of sit-ups a person can do (y). The results were:
y = a+bx
b = -0.89
a = 23.49
r² = 0.6519
r = -0.8074
a. If a person watches 7 hours of television a day, predict how many sit-ups he can do.
b. If a person can do 4 sit ups, predict how many hours of television a day they watch.
hours
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Transcribed Image Text:A regression was run to determine if there is a relationship between hours of TV watched per day (x) and the number of sit-ups a person can do (y). The results were: y = a+bx b = -0.89 a = 23.49 r² = 0.6519 r = -0.8074 a. If a person watches 7 hours of television a day, predict how many sit-ups he can do. b. If a person can do 4 sit ups, predict how many hours of television a day they watch. hours
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