You are considering using a quadratic equation to model how cost C of raising a family is

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You are considering using a quadratic equation to model how cost C of raising a family is related to the number of children in the family N: C = α + β1N + β2N2.

a. Do you expect the value of the parameter β1 to be positive, negative, or 0? Explain.

b. Do you expect the value of the parameter β2 to be positive, negative, or 0?

Explain.

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