13. Suppose that in the Midwest, it is shown that there is a trend between home insurance claims in dollars and the number of cattle owned by the homeowner. The trend shows that higher claims were paid out to homeowners that owned more cattle. Does this trend prove that owning more cattle causes higher insurance claims? Be sure to explain your reasoning, don't just answer yes or no. What is a potential hidden variable in this context? 14. Explain in your own words what extrapolation is and give an example. Why should extrapolation be avoided when doing regression analysis? 15. If the correlation between whole milk content per serving and calories per serving for several brands of ice cream is 0.71, report the coefficient of determination, r, and explain what it means using a complete sentence. Assume that whole milk content is the predictor and calories per serving is the response, and assume that the association between whole milk content and calories is linear