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Question: Guess the correlation. For each of the following pairs of variables, would you expect a substantial negative correlation, a substantial positive correlation, or a small correlation?

(a) The cost of an Internet supplier service and the download speed provided by the service.

(b) The horsepower of new cars and their gas mileages in miles per gallon.

(c) The size of a diamond and the cost of the diamond. (d) The heights and the GPAs of college females.

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