Which of these equations is a linear model? A)Y = b₀ + b₁ln(X)where X = time B)Y = b₀ + b₁X, where X = ln(time) C)Y = b₀ + b₁X, where X = time² D)Y = b₀ + b₁X, where X = time

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A linear model is defined as a model that is a linear combination of its parameters. In option D, the equation is in the form of Y = b0 + b1X, a basic linear form. Option A has a non-linear term ln(X) and option B has ln(time) instead of just time, making them non-linear models. Option C has a term involving a power, making it a non-linear model as well. Hence, the best choice for a linear model is option D.

Which of These Equations Is a Linear Model