Question

The director of an alumni association for a small college wants to determine whether there is any type of relationship between an alum’s contribution (in dollars) and the number of years the alum has been out of school. The data follow.

Answer 1

`\begin{gathered} \hat{y}=bX+a \\ so\colon \\ \hat{y}=-50.43919X+453.17568 \end{gathered}`

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b)

`\begin{gathered} X=4 \\ \hat{y}(4)=-50.43919(4)+453.17568 \\ \hat{y}(4)=-201.75676+453.17568 \\ \hat{y}(4)=251.41892 \end{gathered}`