The data from a random sample of 75 students was used to fit a least squares regression line relating test scores to the number of hours spent playing Left for Dead 2 each week. The explanatory variable (hours spent playing Left for Dead 2) had a range of 0- 18 and the response variable (test score) ranged from 55 - 99%. The resulting prediction equation is y = 99 - 4.3x. Furthermore, the correlation coefficient is 0.85. Determine if the following statements are TRUE or FALSE. a. The association between hours playing Left for Dead 2 and test score is strong. b. As hours spent playing Left for Dead 2 decreases, test score decreases.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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The data from a random sample of 75 students was used to fit a least squares regression line
relating test scores to the number of hours spent playing Left for Dead 2 each week. The
explanatory variable (hours spent playing Left for Dead 2) had a range of 0- 18 and the response
variable (test score) ranged from 55 - 99%. The resulting prediction equation is y = 99 - 4.3x.
Furthermore, the correlation coefficient is 0.85. Determine if the following statements are TRUE or
FALSE.
a. The association between hours playing Left for Dead 2 and test score is strong.
b. As hours spent playing Left for Dead 2 decreases, test score decreases.
Transcribed Image Text:The data from a random sample of 75 students was used to fit a least squares regression line relating test scores to the number of hours spent playing Left for Dead 2 each week. The explanatory variable (hours spent playing Left for Dead 2) had a range of 0- 18 and the response variable (test score) ranged from 55 - 99%. The resulting prediction equation is y = 99 - 4.3x. Furthermore, the correlation coefficient is 0.85. Determine if the following statements are TRUE or FALSE. a. The association between hours playing Left for Dead 2 and test score is strong. b. As hours spent playing Left for Dead 2 decreases, test score decreases.
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