Question: Battery light has a strong negative linear relationship with temperature. If the least squares regression line using X= temperature explains 90% of the variation in

Battery light has a strong negative linear relationship with temperature. If the least squares regression line using X= temperature explains 90% of the variation in battery life, which of the following must be the correlation r between battery life and temperature?

A: -0.90

B: 0.90

C: -0.95

D: 0.95

E: cannot be determined without original data

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