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18. The following data lists eight different investment amounts (X) and the amount of interest they earned (Y): What is the best estimate for the

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18. The following data lists eight different investment amounts (X) and the amount of interest they earned (Y): What is the best estimate for the regression coefcient r between X and Y? a) I will be positive and close to zero b) I will be positive and close to one c) I will be exactly one d) I will be larger than one e) I will be negative

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