In the 1960s, the famous researcher Jane Goodall observed that chimpanzees hunt and eat meat as part of their regular diet. Sometimes chimpanzees hunt alone, while other times they form hunting parties. The following table summarizes research on chimpanzee hunting parties, giving the size of the hunting party and the percentage of successful hunts.

(a) Plot the data. Do the data points lie in a linear pattern?

(b) Find the correlation coefficient. Combining this with your answer to part (a), does the percentage of successful hunts tend to increase with the size of the hunting party?

(c) Find the equation of the least squares line, and graph it on your scatterplot.

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Number of Chimps in Hunting Party 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 Percentage of Successful Hunts 20 30 28 42 40 58 45 62 65 63 75 75 78 75 82