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Question 4. The relationship between number of hours put for exam preparation and
score of Science (y) was studied in 16 college students by using least squares regression. The
following regression equation was obtained from this study:
y-hat= -0.0127 + 0.0180x
For each hour put for the exam, what is the amount of increase of the score in Science
subject?
4,
B 7​

Answer 1

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