Listed below are annual data for various years. The data are weights (pounds) of per capita consumption of mozzarella cheese and the numbers of civil engineering PhD degrees awarded (based on data from the U.S. Department of Agriculture and the National Science Foundation). Is there sufficient evidence to conclude that there is a linear correlation between the two variables? Do the results suggest that consumption of mozzarella cheese causes people to earn PhD degrees in civil engineering?

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Cheese Consumption Civil Engineering PhDs 9.3 9.7 480 501 9.7 540 9.7 552 9.9 547 10.2 622 10.5 11.0 655 701 10.6 10.6 712 708