Answer :
Final answer:
Adding a train with 34 rail cars and a fuel consumption of 30 units/mile does not impact the correlation coefficient.
Explanation:
The addition of a train with 34 rail cars and a fuel consumption of 30 units/mile will not have a direct effect on the correlation coefficient. The correlation coefficient is a measure of the strength and direction of the linear relationship between two variables. The number of rail cars and fuel consumption are not directly related to the correlation coefficient, which primarily measures the relationship between two continuous variables.
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